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Copyright DASSAULT SYSTEMES 2002 1

Generative Shape

Design

CATIA TrainingFoils

Version 5 Release 8

January 2002

EDU-CAT-E-GSD-FF-V5R8


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Course Presentation

Objectives of the courseThis course covers tools for surface design included in the Generative Shape DesignWorkbench that are not present in the Wireframe and Surface Design Workbench. At the

end of the course, the student will be able to model complex fillets and analyze surface

quality.

Targeted audienceMechanical Designers

Prerequisites

Wireframe and Surface Design

1 day


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Table of Contents

Introduction to Generative Shape Design p.6

Creating Wireframe Geometry p.12

Creating an Extremum p.13Creating a Polar Extremum p.21

Creating a Reflect Line Methodology p.29

Creating a Spine p.39

Creating a Parallel Curve onto a Support within GSD p.

Extracting Multiple Edges from a Sketch p.

Tools for Wireframe Geometry Creation p.

Creating Surfaces p.67

Creating Swept Surfaces p.68

Creating an Adaptative Swept Surface p.72


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Table of Contents

1. Performing Operations p.67

Joining Elements p.

Healing Elements p.Smoothing Curves p.

Extracting Elements p.

Federating Elements p.

Creating Fillets p.

Inverting Orientation p.

Creating Laws p.

Using Analysis Tools p.

Managing Features and Open Bodies p.

Hybrid Design (Working with Hybrid Parts) p.


5/195Copyright DASSAULT SYSTEMES 2002 5

Generative Shape Design Workbench

Generative Shape Design Interface

Generative Shape Design Terminology

1 hour

In this lesson you will see V5 Generative Shape Design user interface

and basic functions

Introduction to Generative Shape Design



From the MENUBAR

Start/Shape/Generative Shape

Design

Accessing the Workbench

1

2

By clicking on the current

Workbench icon (top right) to access

the Favourite Workbenches window.



Shape

Design

tools...

Sketcher access...

Part Tree

Standard

tools

All Non-Solids

(i.e. Points,

Curves,

Surfaces)

grouped under

Open

Body

User Interface: Generative Shape Design General Presentation



User Interface: Generative Shape Design (1/2)



User Interface: Generative Shape Design (2/2)



The PartBody is the default Body for a Part where Solids are stored

The Open Body is where non-solids (points, curves, surfaces) are

stored

Terminology

A Part is a combination of one or more Bodies and Open Bodies

Wireframe features

Surface features

Group :Set of surfacic features



From Assembly

> create a new part

(Top-down approach)

or

Create a new part

> insert in assembly

(Bottom-up approach)

General Process

Go into the Sketcher to

create the planar

Wireframe Geometry

Create Surfaces on

the WireframeUse GSD to create all

required 3D Wireframe

Geometry

Optional : Join

Multiple Surfaces

then Offset a solid

4

3

2

1

5

Use GSD to create Planes in3D to support 2D Wireframe

geometry



Creating Wireframe Geometry

In this lesson, you will learn how to create all types of Wireframe

elements.



WFS Wireframe versus GSD WireframeWireframe & Surface Design and Generative Shape Design are two workbenches which have

many common functionalities.

Within GSD you will discover new functionalities that are not in WFS and also advanced

capabilities in some functions that exist in both workbenches.

Functionalities

specific to the

Generative Shape

Design workbench.

WFS

GSD

Functionality common to

both workbenches but

with more capabilities

within GSD.


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Review of WFS Wireframe Geometry

You can review the tools covered in the Wireframe & Surface Design Course which

are also included in the Generative Shape Design Workbench.

Creating Points in 3D

Creating Lines in 3D

Creating Planes in 3D

Creating Curves in 3D


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In this Skillet you learn what is an Extremum and how to create it.

Creating an Extremum


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Why Create an Extremum?

In order to help CATIA find the maximum or minimum point of a curve or surface along any

direction chosen by the user.

Maximum Extremum on a

Curve along the Z Axis

Minimum Extremum on a

Surface along the X Axis

The element might be a sketch, a 3D curve or line, a surface or a solid face.

Maximum Extremum on a

solid face along the Z Axis


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1

2

Select the Extremum Icon.

Creating an Extremum

5

Select the element on which

to find the Extremum.

3 Click OK to confirm. The Extremumis added to the specification tree

Select a line or a plane (normal

direction) to specify the direction

to evaluate the Extremum

Select Max or Min according to

your requirement.4


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Additional Information on Extremum

If the element is a surface, you may specify two

others optional directions.

If the Element is a surface, according to the chosen direction you can obtain a curve or a line as

Extremum.


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In this Skillet you learn what is a Polar Extremum and how to create it.

Creating a Polar Extremum

Wh t i P l E t ?


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What is a Polar Extremum?

Any planar curve can be defined with its polar equation (relation linking the radius and the

angle).

The polar extremum function allows you to find the points on the curve corresponding to :

The minimum radius from a specified origin :

The maximum radius from a specified origin :

The minimum angle regarding to a specified direction :

The maximum angle regarding to a specified direction :

The polar extremum is calculated in an

axis system defined by :

- An origin.

- A reference direction.

C ti P l E t


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Creating a Polar Extremum

1 Select the Polar ExtremumIcon.

2Select the type of

polar extremum you

want to create.

3 Select the planar contouron which you want tocreate the polar

extremum and its

supporting plane.

4Select the origin

point from the polar

extremum will be

calculated.

5Define the reference

axis.

6Click OK to confirm

the polar extremum

creation.

C ti R fl t Li M th d l


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Creating a Reflect Line Methodology

You will learn what is a Reflect Line and how create it.

What is a Reflect Line


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What is a Reflect LineReflect lines are curves for which the normal to the support surface in each point presents the

same angle with a specified direction. It is very useful to find the parting plane of a complex

surface.

If we perform a Draft analysison this part, we can see, thanks

to the red areas that the part is

non extractible.

Thanks to the Reflect Line

curve, we can cut the part in

two extractible parts.

Creating a Reflect Line


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1

2 Select a support surfaceand a direction.

Creating a Reflect Line

4 Click OK to confirm reflect line creation

Key in an angle representing the value between the

selected direction and the normal to the surface.

Support

3

Reflect lines

You can define one of the X,Y or Z axis by

opening a contextual menu in the Direction

field.

Direction

Creating a Spine


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Creating a Spine

You will learn what is a Spine and how create it.

What is a Spine ?


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What is a Spine ?

Profile

Guide

Curve

In this Swept surface, the Spine is, by

default, the guide curve. Each section of

the swept surface is perpendicular to this

Guide Curve

Swept sections are

perpendicular to the

guide curve

The swept sections may be oriented by

another Spine (not the default one). Forinstance you want to get the swept sections

perpendicular to the green spine:

SpineSwept sections are

perpendicular to the Spine.

For the Swept and Lofted surface, there is a default spine (the guide or a computation from the

guides). If you want to fix an orientation for your surface sections you will have to define a Spine.

The Spine icon will allow you to create a curve that will be use later as a spine

There are two ways to build a spine :

Curve normal to a list of ordered

planes or planar curvesSpine curve computed from

several guide curves

Creating a Spine from planes and planar curves


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1

2

Select the Spine Icon.

Creating a Spine from planes and planar curves

Successively select planes

or planar profiles.

3 Click OK to confirm.The Spine is added to

the specification tree.

You can also select a start point.The point is projected onto the first

plane as the spine starting point.

Use these three buttons to replace, delete or

add a plane or a profile.

Creating a Spine from Guide Curves


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1

2

Select the Spine Icon.

Creating a Spine from Guide Curves

Click in the field Guide3

Click OK to confirm. The Spine is

added to the specification tree.

Use these three buttons to replace,

delete or add a plane or a profile.

Select the Guide Curves

4

Sweep using the default

spine (guide curve 1)

Sweep using the user

created spine

Creating a Parallel Curve onto a Support Within GSD


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Creating a Parallel Curve onto a Support Within GSD

You will learn how create various parallel curves.

Creating a Curve Parallel to another on a Support (1/3)


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1


2 Choose the parallelism type :

Geodesic :

The distance between the curves will be

calculated taking the support curvature

into account.

Reference

curve

Euclidean

Parallel Curve

Geodesic

parallel curve

Support

Euclidean :

The distance between both curves will

be calculated without taking in

account the support curvature.

Reference

curve

Parallel

Curve

Geodesic

Euclidean



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3

g pp ( )

Select the reference curve and

the support plane or surface.

Click OK to continue

The created curve is defined as an Object,

i.e. the reference for creating the other

curves

Specify the Offset by entering avalue or using the graphic

manipulator (green arrows).

4

Reference curve

Support

If you want to create several parallel curves

separated by the same offset check the option

Repeat object after OK

If you have chosen the euclidean parallel type, you can

choose to offset the curve at a constant distance or

according to a law.

56

Check here to create two

parallel curves symmetrically

in relation to the reference

curve.

Select the parallel corner type.



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7 Define the number of parallel curves to be created

8 Click OK to confirm parallel curve creation

As many parallel curves as indicated in the Object Repetition dialog box are created, including the object parallel curve. The parallel curves are separated from the object line by a multiple of the offset value. The curve instances are grouped in a new Open Body if you have checked the option.

g pp ( )

Object parallel curve

Parallel curve instances in

a new Open Body

You can choose to create or not the

instances in a new Open Body.

Extracting Multiple Edges from a Sketch.


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g p g

You will learn to extract some geometrical elements from a Sketch.

Extracting Multiple Edges


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1

2

Select the Extract Multiple Edges icon

If you have a sketch containing several elements, you can extract a subpart of these

elements to create geometry.

Select the geometry of the multi profile

sketch that you want to extract

3Click on OK, the extract is added to the

specification tree

Click on this button to delete

a sub element of the list

Tools for Wireframe geometry creation.


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Stacking Commands

Work on Support

Now let us look at some Wireframe tools common to the WFS and GSD

Workbenches ...

Stacking Commands


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You will learn how to stack commands while creatingwireframe elements.

Why Do You Need to Stack Commands ?


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What about stacking commands ?You can create the following construction elements:

- points, - planes, - intersections.

- lines, - projections,

You have access to the stacking commands capability while creating:- points, - circles, - translations,- lines, - conics - rotations,-

planes, - corners, - symmetry.

Stacking commands allows you to create construction elements while creating an

element which requires those construction elements.

Using mouse button 3 you display

a contextual menu listing all the

elements you can create using the

stacking commands capability.

Stacking Commands


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You define the parameters of

the construction element.

Let s see now the way to stack

d

While creating an element you

may need a construction

element that you will create on

the fly.

The construction element is

created and selected at the

same time.When using the stacking command

capability you can check the status

of the stack in the Running

Commands window.

Stacking Commands (1/4)


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1

2 Select the type of plane you want to create.

When you create some wireframe elements (point, line, plane, circle, corner, conic) or when

you perform a translation, a rotation or a symmetry on an object you can create on the fly the

missing construction elements, i.e. points, lines, planes, intersections or projections.

In the following example you will see how to create a plane from scratch.

3 Using mouse button 3 click in the Point

field and select the Create Point option.The Point Definition window is displayed.



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4 Define the parameters to create the point.The status of the stacking commands is

also displayed in the Running Commandswindow.

5 Click OK to accept point creation.The Plane Definition window is

displayed again with Point.1 in the

Point field.

The Point button next to the

Point field allows you to edit

the point parameters.

6 Using mouse button 3 click in the Linefield and select the Create Line option.

The Line Definition window is displayed.



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7 Define the parameters to create the line.The status of the stacking commands is

also displayed in the Running Commandswindow.

8 To create the points needed for theline you can also use the stacking

commands.

In that case the Running Commands

window will look like this:



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9 Once the two points are created click OKto accept the line creation.

The Plane Definition window is displayedagain with Line.1 in the Line field.

The Line button next to the

Line field allows you to edit

the Line parameters.

10 Click OK to accept the plane creation.

If you want to modify a parameter of the

plane you can also double-click on its

identifier in the specification tree.

Point.1

Point.2

Point.3

Line.1

Plane.1

Working on a Support


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You will learn how to define a planar or non-planar support,

work on it with or without a grid and snap to a point.

Why Do You Need to Work on a Support ?


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What about support ? If you define a plane as a support a grid is displayed andpositioned in the plane of the screen. In that case you have access

to the Snap to Point capability. If you define a surface as a support the elements created after

selection of the surface will be located on the surface by default.

You can select a plane or a surface to use it as a support for further element creation.

Support plane = YZWith the Snap to Point

capability the created points

are located at the nearest

intersection of the grid.

Support surface = Extrude.1

When you create a point after

selecting the surface as a

support the Point Definition

window automatically displays

the option On surface.

Working on a Support Plane Support (1/3)


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1

2 Select the plane you want to define as a support, here the YZ plane.

The Work on Support window is displayed. A Working support.1 feature is added tothe specification tree under the Working supports entry.

By default the last created working

support (current) is displayed in red

in the specification tree. The not

current working supports are

displayed in blue.



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The Work on Support window changes and displays several options to define the grid.

Define the number

of steps in a grid

subdivision

Selected plane

Define the total length

of the grid subdivision

Check this option if

you want a different

primary spacing in

the second direction

Define which axis is

taken as H direction

in the 2D plane

3 Click OK to confirm grid creation.

Set the grid

visualization

parallel to the

screen

If you enter coordinates when the Snap to point icon is

active, the system does not take the grid into account.

4 If you want your cursor to movedirectly to an intersection point

of the grid click on the Snap to

Point icon.



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Here you are creating a point. Note that :

- the point type is automatically set to On plane,- the cursor points only on the grid intersection points.

Create an element on the support.5

Exit the working support :6

Using the Working

Supports Activity icon

Using the Set as Not Current

option in the contextual menu

Working on a Support Surface Support (1/2)


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1

2 Select the surface you want to define as a support, here the extruded surface.

The Work on Support window is displayed. A Working support.1 feature is added tothe specification tree under the Working supports entry.By default the last created working

support (current) is displayed in red

in the specification tree. The not

current working supports are

displayed in blue.

Working on a Support Surface Support (2/2)


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3 Click OK to confirm grid creation.

Here you are creating a point. Note

that the point type is automatically

set to On surface.

Create an element on the support.4

Exit the working support :5

Using the Working

Supports Activity icon

Using the Set as Not Current

option in the contextual menu

Creating Surfaces


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In this lesson, you will review all the Surface creation tools that were

covered in WFS and that are also available in the GSD Workbench

Why Do You Need Surfaces ?


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What about surfaces ?You can create a surface from:- a line, curve or sketch- other surfaces

You can use basic surfaces either to create a new part or to complete the design of a solid

part

Surface of revolutioncreated from a profile

(Spline) and an axis of

revolution

Offset surface createdfrom another surface

and a direction

For each type of surface you will also define its limits or the angle of revolution

WFS Surfaces versus GSD Surfaces

Wireframe & Surface Design and Generative Shape Design are two workbenches which have


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g p g




Functionality specific tothe Generative Shape

Design workbench.

Functionality common to

both workbenches but

with more capabilities

within GSD.

WFS GSD

Review of WFS Surfaces



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Creating a Surface from a profile

- Creating a Extruded Surface

- Creating a Surface of Revolution

-Creating a Sphere

Creating a Surface from Boundaries- Creating a Fill Surface

- Creating a Blend Surface

Creating a Surface from another Surface

- Creating an Offset Surface

Creating a Lofted Surface

You will learn how to create Explicit and Implicit Swept Surfaces

Creating Swept Surfaces


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Explicit Swept Surfaces

Implicit Swept Surfaces

You will learn how to create Explicit and Implicit Swept Surfaces

within the Generative Shape Design Workbench

You will learn how to create swept surfaces using Any Profile

Creating Explicit Type Swept Surfaces


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You will learn how to create swept surfaces using Any Profile

Creating an Explicit-type Swept Surface (1/7)


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1

2

3 Confirm swept surface creation

Select the guide curve and the profile.

You can then choose to give a reference plane or surface (Reference tab) or to selectanother guide curve and anchor points (Second Guide tab).

If no spine is selected the

guide curve is used as spine.

Select the Sweep Surface icon.

By default, the swept

profile is constant in

each section along

the guide curve.


Using a reference surface :


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You can define a

reference

surface to

control the

position of the

profile along the

sweep.

You can define alaw to drive the

angle evolution

between the profile

and the reference

surface


Position Profile


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Using positioning and a reference surface :Using positioning and a reference surface :

The guide curve axis system is now oriented

regarding the reference surface orientation :

Using positioning :Using positioning :

The profile is oriented in the guide curve axis system.

Using no positioning :Using no positioning :

When the profile position is fixed with respect to the guide

curve, the sweep lies on the profile and on the guide curve

(if it intersects the profile) or on the parallel to the guide

curve crossing the profile (minimum distance).

You can position the profile with the guide curve.

Using the Position profile mode, the reference is no more the profile but the Guide Curve.

Green axis-system :

current profile orientation

Grey axis-system :

profile reference axis


Position Profile : Parameters


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In the Position profile mode you can display parameters to modify the position of the sweep

profile on the guide curve defining a new origin and a rotation angle or direction.

These coordinates (or the selected point) define the position of

the origin of the positioning axis system (green) in the first

sweep plane.

The direction

defines the X

axis of the

positioning

axis system.

Or

45 deg

You can rotate

the positioning

axis system

around the guide

curve withrespect to initial

axis system of

the profile.


Position Profile : Parameters


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In the Position profile mode you can display parameters to modify the position of the sweep

profile on the guide curve defining a new origin and a rotation angle or direction.

You may want to

invert the orientation

of the X or Y axes of

the positioning axis

system.

You can select a point defining the

origin of the axis system linked tothe profile.


Second Guide Curve and Anchor Points


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You can select a second guide curve to define the sweep.

If you check the Profile extremitiesinverted option, the profile extremities

connected to the guides are inverted.

If you check the Vertical orientation

inverted option, the vertical orientation

of the profile is inverted.

If no spine is selected, the first

guide curve is the spine :

You can create a spine if you

want to obtain a more regular

surface :


Second Guide Curve and Anchor Points


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You also can use Anchor Points to position the

profile on the guide curves.

Anchor points

Profile

Guide curves

While creating the swept surface, the

anchor points are remaining on the guide

curves all the sweep long.

So, the profile is positioned regarding to

the initial geometrical conditions between

the profile and the anchor points.

You will learn how to create swept surfaces using Linear Profiles

Creating Line Type Swept Surfaces


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Creating a Line-type Swept Surface : Two Limits


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1

2

Line type :

3 Confirm surface creation

Click on the Line icon, then select the Two limits subtype and the two guide curves.

If no spine is selected the first


Subtype : Two limits

Length 1

Length 2

Guide

curve 1

Guide

curve 2

You can select the

second guide

curve as middlecurve instead of

entering length

values (same as

Limit and middle

subtype)

Creating a Line-type Swept Surface : Reference Surface


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1

2

Line type :


Click on the Line icon, then select the With reference surface subtype, the guide curve

and the reference surface. Key in an angle value and define the length of the surface.

If no spine is selected the first


Subtype : With reference surface

Angle between the

sweep and the

reference surface.

Length 2Length 1

Guide

curve 1

Reference surface

Angle

Creating a Line-type Swept Surface : Tangency Surface


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1

2

Line type :


Click on the Line icon, then select the With tangent surface subtype, the guide curve

and the tangency surface.

If no spine is selected the first guide

curve is used as spine.

Subtype : With tangency surface

Tangency

surface

Guide

curve 1

You will learn how to create swept surfaces using Circular Profiles

Creating Circle Type Swept Surfaces


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Creating a Circle-type Swept Surface : Two Guides and Radius


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1

2

Circle type :


Click on the Circle icon, then select the Two guides and radius subtype, the two guidecurves and the radius.


first guide curve is used as

spine.

Subtype : Two guides and radius

Radius

In case of several solutions you can

check them all and then select one of

them (green color = active solution)

Creating a Circle-type Swept Surface : Center and Radius


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1

2

Circle type :


Click on the Circle icon, then select the Center and radius subtype, a center curve

and a radius.


center curve is used as spine.

Subtype : Center and radius

Creating a Circle-type Swept Surface : One Guide and TangencySurface


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Click on the Circle icon, then select the one guide and tangency surface as subtype.

Select the guide curve, the tangency surface, and key in a radius sufficient to link

the guide curve and the tangency surface.

Circle type : Subtype : One Guide and Tangency Surface

1

2

In case of several solutions you can check them all and

then select one of them (orange color = active solution)

You will learn how to create swept surfaces using Conical Profiles

Creating Conical Type Swept Surfaces


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1

Creating a Conical-type Swept Surface : Two Guide Curves

C i l t S bt T G id


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2

Conical type :


Click on the Conic icon, then select Two guidecurves and their tangency supports.

Define an angle between the swept surface

and the tangency surface

Subtype : Two Guide curves

Set the parameter value (ranges from 0 to 1)

indicating the sweep proximity to the spine.

1

Creating a Conical-type Swept Surface : Five Guide Curves

Conical type : Subtype : Five Guide curves


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1

2

Conical type :


Click on the Conic icon, then select Fourguide curves and a tangency support.

You can specify a Spine curve.

The default spine is always the

first guide curve.

Subtype : Five Guide curves

Five Guide

Curves

You will learn what is an Adaptative Swept Surface and how create it

Creating an Adaptative Swept Surface


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What is an Adaptative Swept Surface.

This particular sweep uses a Sketch as Implicit profile along a Guiding Curve. The guiding

curve is used as the default spine.


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You can modify the

constraints defined in the

original sketch

independently for each

section.

SketchBy giving some points,

you will define

automatically

intermediate sections on

the spine.

Guiding Curve

The Sketch has been

designed in context

directly from the dialog

box and represent a

connex profile

What are the differences with the Classic Sweep.

The Implicit sweep is always defined from a sketch. This leads to build a surface that inherits of

the sketch constraints scheme on the whole surface. Besides you can create on the fly

intermediate sections along the guiding curve and modify the constraints independently in each


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In an adaptative sweep,

the surface inherits of

the sketch constraints.

In the Explicit sweep the

surface does not inherit

of the constraints defined

in the sketch.

g g g y p y

section.

If we analyse the

connections between the

surfaces, there is a few

acceptable tangency

discontinuity areas.

If we analyse the

connections between the

surfaces, there are important

tangency discontinuities.

What does that mean ?

1

Creating an Adaptative Swept Surface (1/3)

Select the Adaptative Sweep icon.


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2 Select the Guide Curve and the Sketch to be swept.

3Select predefined

points or vertices on

the guide curve to add

intermediate sections.

Sketch

Guiding Curve

Intermediate

sections

4


Under the Parameters tab, you can modify the constraints defined in the

original sketch for each section independently


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75 mm radius

22 mm radius

Use this icon to

remove a section

5


Under the Moving Frame tab, you can replace the

spine (the default one is the guiding curve).


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Click OK to confirm the surface creation6

The Discretization scroll bar allows you to definethe precision of the surface. The step value define

the number of virtual intermediate sections used

to create the surface.

Result with adiscretization

step = 1.00

Result with adiscretization

step = 0.50

Additional Information on Adaptative Sweep (1/2)

If you want to create an adaptative swept surface

which lays on other surfaces, you will create your

sketch in context because you want to put some In many cases you will meet some difficulties to


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sketch in context because you want to put some

associative constraints with the existing geometry.

Here we want that the sketch keeps its tangency

with the surfaces (the intersection between the

surface and the sketch plane) in each section of the

sweep.

In many cases, you will meet some difficulties to

build associative elements from existing geometry.

To avoid this problem, it is better to build its sketch

directly from the Adaptative sweep dialog box.

Open a contextual menu in the Sketch field

then choose Edit Sketch.

Additional Information on Adaptative Sweep (2/2)

The Sketch Creation for Adaptative

Sweep dialog box is displayed.

You just have to follow the

instructions of the prompt bar.


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Click on OK, the sketch is

automatically defined with the

construction elements.

Associative construction elements

In this lesson, you will review WFS tools to transform, to split, and to

trim 3D geometrical elements. You will also see additional, powerful

Performing Operations on the Geometry


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g , p

tools in GSD for Filleting, Extrapolating, Healing, and inverting the

orientation of Surfaces.

Review of WFS Operations

Joining Surfaces

Healing Surfaces

Smoothing Curves

Extracting Elements

Federating Elements

Creating Fillets

Inverting Orientation

Creating Laws

WFS Operations versus GSD Operations

Wireframe & Surface Design and Generative Shape Design are two

workbenches which have many common functionalities.

Within GSD you will discover new functionalities that are not in

WFS d l d d biliti i f ti th t i t i

GSD


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WFS and also advanced capabilities in some functions that exist in

both workbenches.

Functionalities specific to

the Generative Shape

Design workbench.

WFS

Review of WFS Operations




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Restoring Surfaces

Disassembling Surfaces

Splitting Elements

Trimming Elements

Transforming Elements- Translating an Element- Rotating an Element- Applying a Symmetry to an Element- Scaling an Element- Creating an Affinity- Performing an Axis-to-Axis transformation

Extrapolating Elements

Creating Near ElementsCreating Patterns

Joining Elements


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You will learn how to join wireframe or surface elements

Element 1

Element 2

Join result

You can join elements to use two or more elements as a single element in a

further operation.

Why Joining Elements ?


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What about joined elements ?

You can create joined elements from:- adjacent curves- adjacent surfaces

Four adjacent

surfaces.

Join result

Join result

Two adjacent

splines.

How to Join Elements


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Let s see now the way to join elements ...

1

Joining Elements (1/2)


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2 Select one by one the elements to be joined together.

3 Click OK to confirm join operation.

To modify the join definition you

can edit it and remove elements orreplace an element by another.

This option checks

the connexity

between the elements

in the resulting join.

CATIA will:- reduce the number

of resulting elements

- ignore the elements

that do not allow the

join to be created.

You can define a merging

distance, i.e. the maximum

distance below which two

elements are considered

as only one element.

Element 1

Element 2

Joining Elements (2/2)

While joining elements you can exclude some sub-element from the joined

surface.


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Face to be

removed

You can also select sub-

elements to exclude from

the joined surfaces.

You can create another join

surface with the excluded

sub-elements.

While joining surfaces, you can specify an angle tolerance.

If the angle value on the edge between two elements is greater than the Angle

Tolerance value, the elements are not joined

Additional Information on Joining


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Select the elements to be

joined. The tangencydiscontinuity between these

surfaces is 6deg :

Activate the new

option Angle

Tolerance.

CATIA refuses to create the join

surface because the tangency

discontinuity between the

surfaces is greater than the

specified angle tolerance:

Healing Surfaces

You will learn about the Healing operation


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Why Healing?


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While Join is a topological integration

of surfaces into one logical surface,HEALING will mathematically deform

the shape of surfaces at boundary

areas so they smoothly blend into one

another.

When physical parts are

manufactured from CAD models, the

machining is guided by the exact

representation of the individual

surfaces. Hence, Healing is important

to ensure that each one of these

surfaces transitions smoothly

between one another.

1

Healing Surfaces (1/3)


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2

3Choose if you want to heal

the point discontinuities or

the tangency discontinuities.

Select the Join where you know there is a gap that you

would like to Heal. You can also select directly thesurfaces to heal.

Healing Surfaces (2/3) : Parameters

The objective of the parameters is to choose the discontinuities you want to heal or not :

4 Key in parameters :


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Note : a quick violation analysis can help to choose these parameters :

Healed Not healed

Merging distance

Healed Not healed

Tangency angle

Not healed Healed

Distance Objective

Not healed Healed

Tangency Objective

Gap value

Tangency discontinuity value

These parameters are thresholds that allows you to:- define the discontinuities to be healed (Merging

distance and Tangency angle).- define the discontinuities you consider it is not

necessary to heal (Distance Objective and Tangency

Objective).

Healing Surfaces (3/3)

5 Click OK to confirm thehealed surface creation.


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Note : a quick violation analysis now shows :

Smoothing Curves

In this Skillet you will learn how smoothing curves.


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Why Smoothing CurvesSometimes when you want create a sweep for instance, CATIA answers you that the

profile curve is not continue in tangency and that it could not build the geometry as you

whish. The Smoothing Curve function allows you to clean these curves in distance and

tangency.


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We want to createa Line-type sweep

from this curve

using the plane as

reference surface.

We need to

smooth the curve

before generating

the sweep.

We can see the

discontinuity

points and their

values to correct

the curve.

Using the smoothedcurve, we can create

the swept surface.

1

Smoothing Curves (1/2)

Select the Smoothing

Curve icon.

A discontinuity analysis is


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2 Select the curve to be smoothed.

3 Using the displayed values, set thetangency and curvature thresholdsup to the value you want to repair.

A discontinuity analysis is

displayed :

- In area : discontinuity

type and value before

smoothing.

- Out area : discontinuity

status after smoothing.

4 Click on OK to create the smoothed curve

Smoothing Curves (2/2)

1

Smoothing a curve, you have the possibility to select a support surface.


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Click OK to create the smoothed

curve : it will lie on the surface.

2 Select the curve to smooth.

3 Define the smooth parameters.

4 Select the support surface (the curveto smooth must lie on this surface).

5

Additional Information on Smooth Curve(1/2)

Meaning of the boxes colour:

The status of the discontinuities is displayed using a colour code.

A red boxred box means that the discontinuity has not been


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A red boxred box means that the discontinuity has not been

corrected.

Reason : the discontinuity is not within the specified

threshold.

A yellow boxyellow box means that the discontinuity has been

partially corrected.

Reason : the discontinuity in tangency is within thetangency threshold, but the curvature discontinuity is

not within the curvature threshold.

A green boxgreen box means that the discontinuity has been

completely corrected.

Reason : both tangency and curvature discontinuity are

within the curvature and tangency threshold.

Additional Information on Smooth Curve (2/2)You can choose to visualize only the non-corrected discontinuities :


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You can choose to visualize the discontinuities interactively, placing the mouse on the

discontinuity to make the text box appear :

You can also display the information sequentially :

The total number of

discontinuities is

displayed.

Extracting Elements


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You will learn how to extract edges and faces from a surface.

Edge

extraction

Face

extraction

1

Extracting an Edge from a SurfaceYou can extract one or several edges of a surface which can be either boundaries or

limiting edges of faces. You cannot define limit points.


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2

3

Select a surface edge and

choose the propagation type.

Click OK to confirm edge extraction.

Selected

edge

According to the selected propagation type you get :

1- No propagation 3- Point continuity2- Tangent continuity

Here there is an ambiguity

about the propagation side

you are prompted to select

a support face. In this case,

the dialog box dynamically

updates and the Support

field is added.

Selected

support

face

1

Extracting a Face from a SurfaceYou can extract one or several faces of a surface with or without propagation.


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2

3

Select a face and choose

the propagation type.

Click OK to confirm face extraction.

The complementary mode :

Switching on this button, you can de-select the

elements to extract, and select the non-selected

elements :

Federating Elements


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You will learn how to federate elements while joining surfaces

and extracting faces

Why federate ? (1/2)

1- Surfaces are made of several faces.

Elements created from a surface are in fact created from its faces.


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2- A modification of the part geometry may lead to a change of the supporting face.

The pad has been created with the

option Up to surface, using the blue

surface.

A fillet have been added to the top

edge of this pad.

This edge depends on a face of the

blue surface.

The sketch supporting the pad have

been modified so that the filleted edge

does not lie anymore on the same face

Why federate ? (2/2)

3- This change can lead to an update error because the elements created from these

faces are no longer recognized.


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4- Federating the faces of the surfaces, this kind of update error does not occur anymore.

During the update of the part, an

update error occurred : the filleted

edge is not recognized :

To solve the problem, you just have to

federate the faces of the blue surface.

Then the part is updated without any

problem :

How to Federate ElementsThe federation of elements is available through the Join and the Extract tools :


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Lets see now how to federate ...

1

Federating Elements while Joining Surfaces

Joining surfaces, you have the possibility to federate the faces of the resulting surface


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Click OK to create the federated

joined surface.

2 Select one by one the elements to be joined together.

3Expand the new Federation panel

in the join dialog box.

4 Select one face of the join surfaceand choose a propagation type.

5

1

Federating Elements while Extracting FacesExtracting faces from a solid, you have the possibility to federate the faces of the

resulting surface


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Click OK to create the federated

extracted surface.

2 Select one face of the solid.

3 Choose a propagation type.

4 Activate the federation switch.

5

Creating Fillets

Filleting is an operation that is used to smoothly connect surfaces.

You will learn how to create Shape Edge Variable Face-To-Face and Tri-


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You will learn how to create Shape, Edge, Variable, Face To Face, and Tri

Tangent Fillets

Why Fillets?

Fillets were originally used in industry to remove sharp

edges on parts.


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More and more, people having been using Fillets as ageneral modelling tool for surface creation.

1

Creating a Shape Fillet (1/3)Use these command to create a fillet between two surfaces


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2

Select the Shape Fillet Icon

5

Choose one of the Extremities

conditions (Switch between the

four types - and Apply - to see the

difference)

3

Click OK to confirm. The Shape Fillet

is added to the specification tree

Select two surfaces and put in the

required radius value. Make sure the

red arrows point towards the concave

side of the fillet.

4

Decide which supporting surface

you want to trim.

Creating a Shape Fillet (2/3) : Extremity Type


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Here are the different types

of extremities

Creating a Shape Fillet (3/3) : Trimming the supportsFour combinations are possible :


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No support are trimmed Both support are trimmed

The second support is left unchanged.

Only the first support is trimmed.The first support is left unchanged.

Only the second support is trimmed.

1

Creating an Edge Fillet (1/2)Use these command to provide a transitional surface along a sharp internal edge of a

surface

You can control

3 Enter the Radius value.


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2

Select the Edge Fillet Icon

Select one or more internal edges of

a surface

You can control

the Extremities ofthe Fillet the

same way as for

the Shape Fillet

You can also

fillet an entire

face

Creating an Edge Fillet (2/2)

Choose a Propagation type :4

If Minimal, only the selected edges will be filleted.


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Click OK to confirm. The Edge Fillet is added to the specification tree5

If Tangency, all edges tangent to the selected edges will also be filleted.

1Select the Variable

Fillet Icon

Creating a Variable Fillet (1/3)In this type of fillet the radius varies at selected points along a selected edge


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2

3

Select one or more internal edges of

a surface

4

You can specify a Zero radius value

at limit points of a Variable Fillet

Double-Click on any of the shown

radius values to change it

Select inside this box then select

anywhere along the edge to put in an

additional radius value along the edge.

(You can also create a point on the edge

and select this point if accuracy is

required)You can control the Extremities of

the Fillet the same way as for the

Shape Fillet and the Propagation

type the same way as for the Edge

Fillet

Creating a Variable Fillet (2/3)

Choose a radius variation type :

Cubic (function ax3+bx2+cx+d)5


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Click OK to confirm. The Variable Fillet is added to

the specification tree6

Linear(function ax+b)

Creating a Variable Fillet (3/3)

Edge to be filleted

You have the capability to create a variable fillet with the fillet sections keeping

a constant direction in accordance with a spine


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The fillet sections are

perpendicular to filleted edge

The fillet sections areperpendicular to the Spine

Spine

12

Creating a Face-To-Face Fillet

Select the two faces

(belonging to the same

surface) between which you

want to create the Face-To-

Use the Face-Face fillet command when there is no intersection between the

faces or when there are more than two sharp edges between the faces.


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Select the Face-To-Face FilletIcon

3

Click OK to confirm.

The Face-To-Face Fillet

is added to thespecification tree

Face Fillet

The shape of the Face-To-Face

Fillet is basically generated by

lying a Cylinder with a specific

radius into the gap between two

faces. If the radius is too small,

the Cylinder will not be able totouch both faces at once. If the

radius is two big, we will not be

able to achieve a Cylinder tangent

to the faces.

Put in the desired

radius

4You can control

the Extremities of

the Fillet the

same way as for

the Shape Fillet

1

Creating a Tri-Tangent FilletThe creation of tri-tangent fillets involves the removal of one of the three selected faces.

The three faces must

belonging to the same

surface.


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2

Select the Tri-Tangent Fillet Icon

3

Click OK to confirm. The Tri-Tangent

Fillet is added to the specification tree.

Select the two faces you

want to keep

The Tri-Tangent Fillet is a variableradius Fillet tangent to all three

faces selected.

Select the face to be removed.

4

Additional Information on Fillet : Hold Curve and SpineThis option concerns with all type of fillet : we will focus on the shape fillet creation.

Creating Fillets, you can now choose a curve sketched on one of the support to be connected to

control the radius variation.

Spine Curve

Hold Curve


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Select a hold curve lying on one support to drive

the fillet radius, And a spine curve.

Note : the result is a variable

radius fillet whose radius is drivenby the hold curve.

Additional Information on Fillet : Limiting ElementsThis option concerns the edge, the variable radius, the face-face and the tri-tangent fillets.

While creating one of these fillets, you can limit it by selecting an element (plane or surface) that

intersects it completely :


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Edge to fillet

Limiting element

Edge to fillet Limiting element

Additional Information on Fillet : Trim ribbonThis option concerns the edge and the variable radius fillets.

In some case, fillets may be overlapping. The Trim ribbons option lets you solve this by

trimming the fillets where they overlap.


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Overlapping

fillets

Additional Information on Fillet : Rolling Edge (1/2)This option concerns the edge and the variable radius fillets.

In some case, you may need to indicate that an edge should not be filleted, if a radius is too

large for instance.


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Click on the more button to expand the dialog box, then select the edge

you wish to keep.

Additional Information on Fillet : Rolling Edge (2/2)

You may need that a fillet roll around an edge.


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You just have to expand the edge fillet dialog box clicking on the more

button, then select the edge on which the fillet will roll in the Edge to keepfield.

Inverting Orientation

You will learn how to invert the orientation of Curves and Surfaces


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Inverting a Curve

Inverting a Surface

Why Invert Orientation?

The results of most surface creation and

trimming operations depend on the orientations

f th l t i l d M t i t f


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of the elements involved. Most menu interfacesallow the user to change these orientations on

the fly.

The Invert Orientation operation exists solely

for the users convenience.

1 Access the Invert Orientation from the

M b d I t/O ti

How to Invert Orientation


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2

Menubar - under Insert/Operation

3

Click OK to confirm. The Invert operation is

added to the specification tree

Select the curve or surface to invert its

orientation. The initial display of the red

arrow is the already inverted direction.

Clicking on the red arrow or on the

Reset Initial button displays the initial

(uninverted) orientation of the element

4

LawsYou will learn how to create evolution laws, to be used later on when

creating Generative Shape Design elements, such as swept surfaces, or

parallel curves.


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What are Laws?A law is computed as the distance between points on the reference line and their matching

points onto the definition curve.

Definition Curve


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d

Reference Line

The law is defined on thecommon length between

both entities.

L

The law define the variations of d along L.

The interest to define laws is to reuse them in others tools. You can reuse this variable distance

only to create parallel curves or sweeps.

Instead having a constant distance for a parallel curve you will be able to make vary this distance

with a predefined law.

1

2

Select the Law Icon.

Creating Laws

Select the line you want as reference line.

Create an evolution function from existing geometry.


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Click OK to confirm. The law is

added to the Specification Tree.

Select the line or curve you want as

definition curve for the evolution law.

4

When the reference line and definition curve do

not present the same length, only the common

area is used to compute the law.

Reference

Definition curve

3

Fix a X value or use

the manipulators to

see the corresponding

Y value

Additional Information on Laws

You can combine the laws created within GSD with laws created with the Knowledge Law Editor

Define the parameter

names and typesSelect the Law icon in the

Knowledge toolbar.


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Reuse these law

combinations in Parallel

curves or classic sweeps

creation like the other laws.

To reuse the graphic law, check

Select Feature then use the

Evaluate object as written above.

In this lesson, you will learn how to use the Draft, Curvature, and

Connection Analysis Tools

The Connect Checker

Using Analysis Tools


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The Curve Connect Checker

Draft Analysis

Curvature Analysis

Porcupine Curvature Analysis

The Connect Checker

You will learn how to use the Connect Checker tool to analyze the

connection between surfaces.


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Why the Connect Checker?

For surface modeling, to ensure good transition from one surface to another, the Connect

Checker allows the user to examine :

the distance (mm)

the tangency (deg)

the curvature (%)


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along an edge joining two surfaces.

Tangency analysis

Curvature analysis

Distance analysis

12

Multi-Select the two surfaces between which

you would like to check the connection

How to use the Connect Checker (1/2)

Select the Connect Checker Icon


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3 Choose the Analysis Type :distance, tangency or curvature

45

Adjust the color ranges taking account

your Minimum and Maximum values

Choose the type of Display you

require.

Note the Minimum and Maximum values

between the two surfaces.

How to use the Connect Checker (2/2)


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Click OK to confirm. The Connection

Analysis is added to the specification tree7

The number of selected elements and the

number of detected connections are

displayed. Select the Quick button to obtain a simplified analysis

taking into account tolerances (distance, tangency andcurvature).

Check the analysis result on

the geometry.6

The Curve Connect Checker

You will learn how to use the Connect Checker tool to analyze the curvature

discontinuities on curves.


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Why the Curve Connect Checker ?

For wireframe based surface modeling, it is necessary to use curve that are continuous in

tangency and in curvature. The curve connect checker allows you to detect the point, tangency

or curvature discontinuities in order to smooth the non-continuous curves :

the distance (mm)

the tangency (deg)

the curvature (%)


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( )

This curve is discontinuous

in tangency.

Building a circle sweep on it,

you get a surface that is notcontinuous in tangency.

How to use the Curve Connect Checker (1/2)

This tool allows you to detect the point, tangency and curvature discontinuities on curves.

1Select the Curve

Connect Checker

icon and the

curve to analyse.

2 Select the Analyse Type you want to process.


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Distance analysis

Tangency analysisCurvature analysis

The point discontinuities are displayed on the

analysed curve.

The curvature discontinuities are displayed on

the analysed curve.The tangency discontinuities are displayed on

the analysed curve.

How to use the Curve Connect Checker (2/2)

This option allows the user to give thresholds bellow which the

discontinuity is not detected.

If both tangency and curvature discontinuities are detected, only the

tangency discontinuity is displayed.

3 Select the Quick Violation Analysis mode byclicking on the Quick button.


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Display of the maximum

discontinuity values on the curve.

Click OK to confirm. The Curve Connect

Checker Analysis is added to the

specification tree :

4

Draft Analysis

You will learn how to use the Draft Analysis tool to analyze the draft

values of surfaces or solids


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Why analyze Draft?

For mold design, Drafts need to be analyzed to determine extractability of the part.

For NC Machining, a part is analyzed to look for negative Draft angles in order to determine

if a 5-Axis NC machine will be required to cut the part.


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1 2

How to use the Draft Analysis Tool (1/2)

3

Select the customized view

render style.

Select the surface(s) or solidwhere you want to examine

Select the Draft Analysis

Icon.

The Draft analysis tool gives you at every point the angle between the normal to the

surface and the Draft direction which is by default the Z axis.


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Adjust the color range fields - here Red is negative

draft, Dark Blue is 0-3 Degrees (probably vertical),

Light Blue is 3-15 Degrees, and Green is 15-20 Degrees

DraftThe analysis is displayed

on the selected element.

4

5

How to use the Draft Analysis Tool (2/2)

The default Draft direction is the Z axis. To modify it drag and drop the compass

on a plane or on the surface.You can manipulate the

compass, the analysis

follows the w axis as draft

direction


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6

Click Close when done.7

Activate the fly analysis checkbox and

navigate with the pointer over the surface

Arrows are displayed under the

pointer. Green arrow is the

normal to the surface, red

represent draft direction.

The displayed value indicates the

angle between the draft direction

and the normal to the surface at

the current point.

The part is not extractible

Using this draft direction,

the part sould be

extractible

Click on this button to

invert the draft

direction.

Curvature Analysis

You will learn how to use the Mapping Analysis tool to analyze surface

curvature


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Why Curvature Analysis?

Curvature analysis of surfaces in generally used to help model high quality surfaces.

Abrupt change of curvature on a surface (for example on a car exterior body) can be readily seen by

the naked eye and must be smoothed.


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What is a Curvature Analysis? (1/2)

Curvature analysis of surfaces is used to detect the defaults on high quality surfaces. Abrupt change

of curvature on a surface can be readily seen by the naked eye and must be smoothed.

The curvature analysis measure the curvature on each point of a surface according to the following

method :

curvature radius in one point (R): represents the local convexity of the surface

The curvature in one point (C): C = 1 / R If radius R curvature C


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The curvature in one point (C): C 1 / R

is the inverse of the radius

Radius measure of the

surface intersection with a

cutting plane

Curvature measure of the

surface intersection with a

cutting plane

Radius (R)

Curvature (C)

If radius R curvature C

If radius R curvature C

Intersection

Plane / Surface

What is a Curvature Analysis? (2/2)

If we rotate planes around the normal on a point

of the surface, we can build the intersection of

these planes with the surface.

Point on surface

Normal

On these intersection curves we can measure an

infinity of curvature values in this point.


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In each point we will have a maximum curvature value CM and a minimum curvature value Cm.

The Mapping analysis tool allows you to measure these minimum and maximum values, the mean value

(Gaussian analysis) and to see the inflection areas.

Gaussian : C = CM.Cm Minimum Maximum Inflection area

1 2

Measuring the Mean Curvature on a Surface.

3 Select the Mapping Analysis Icon

4Adjust the color range fields taking into account

your observation in Step 3. The objective is to

differentiate the various curvature sub-areas of

Select the surfaces where

you want to examine

Curvature


render style.

Select Gaussian as analysis type.


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Click Close when done5

the surfaces

Pass the mouse over the

surfaces and read the

curvature values shown in

order to get a general idea of

curvature variation on thepartChange the colorscale to linear

1 2

Measuring the Minimum or Maximum Curvature on a Surface.

3 Select the Mapping Analysis Icon

4Adjust the color range fields taking into account

S 3


you want to examine

Curvature


render style.

Select Minimum or Maximum asanalysis type.


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your observation in Step 3 : drag and drop the

arrows or key in directly the right values in the

fields.

Pass the mouse over the

surfaces and read the

curvature values shown in

order to get a general idea of

curvature variation on the

part.

Notice that the minimum

curvature is always in the

perpendicular plane to the

maximum curvature .

1 2

Checking a Surface Using the Limited Radius

3 Select the Mapping Analysis Icon4


you want to examine

Curvature


render style.

Select Limited as

analysis type.

Use the Limited Radius analysis to check if the surface can be offset or to check if tool

(an end mill) with a end radius can mill the part.


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5

Set the Limited Radius

value.In the green area, the defined

tool could not mill the part.

1 2

Checking the Inflection Areas on Surfaces.

3 Select the Mapping Analysis Icon4


you want to examine

Curvature


render style.

Select Inflexion Area as

analysis type

Using the Inflection Area analysis type you can check where are the curvature sign

changes.


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analysis type.

In the blue areas, the

Gaussian curvature (mean) is

negative.

In the green area, theGaussian curvature (mean) is

positive.

The Analysis is calculated on the mesh used to display the object, the precision of the analysis depends

upon the display settings.

Additional Information on Mapping Analysis (1/2)


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Fix the 3D Accuracy to the

minimum value to have a better

analysis rendering.

Additional Information on Mapping Analysis (2/2)

Case of a multi surface analysis :

The displayed curvatureinformation values are the

values of the last selected

The displayed curvature

information values are kept on

th t f f

Global analysisMulti surfaces analysis


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The analysis is

done on each

surface apart.

values of the last selected

surface

The analysis is done

on all the set of

surfaces

the set of surfaces

Porcupine Curvature Analysis

You will learn how to use the

Porcupine Curvature Analysis tool

to analyze surfaces boundaries

curvature


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Why Porcupine Curvature Analysis?

The Porcupine Curvature analysis is an easy curvature discontinuities visualization tool.

The boundaries of a surface are impacted by the curvature discontinuities of the surface.

The Porcupine Curvature analysis analyses the surfaces boundaries in order to detect the surfaces

curvature discontinuities.


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Using the Porcupine Curvature Analysis (1/4)

This tool can be applied on :-A curve.-A surface (boundaries analysis).

This tool allows you to detect the curvature discontinuities on curves and to visualize them.


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Analysis type :

Curvature discontinuitiesdisplayed with a radius

type analysis.


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Curvature discontinuities

displayed with a

curvature type analysis.

type a a ys s

You can choose between a

curvature type and a radius

type analysis.

- Curvature : you visualizethe curvature evolution on

the curve.- Radius : you visualize the

radius evolution along the

curve.


The diagram :


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You can choose to visualize the curvature evolution using the

diagram:

-Each curve analysis posses its own color for a clearervisualization.- The extremum values are displayed in the diagram window.- You can slide the pointer over the diagram to display the

amplitude at a given point of the curve.


The Porcupine Curvature Analysis visualization parameters :

Reverse thecurvature values on

the analyzed curves.

Display all

theextremum on the

analyzed curves.


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y analyzed curves.

Fills the analysis

area.

Envelop the analysis

area.

Adjusting these parameters, you can optimize the analysis

visualization. It has no effect on the curvature values along

the curves.


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WFS Management Features versus GSD Management Features

Wireframe & Surface Design and Generative Shape Design are two workbenches which have




WFSGSD


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Functionalities specific to

the Generative Shape

Design workbench.

Review of WFS Miscellaneous Tools

Manipulating Elements

Editing Wireframe and Surface Definition

Creating Datum Features




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Creating Datum Features

Updating a Part

Managing OpenBodies

Managing the Geometry

You will learn the following tools to help you manage Open Bodies in the

specification tree:

Using the Historical Graph

Quick Edition of Geometry


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y

Deleting Useless Elements

Auto-Sorting an OpenBody

1 2

Using the Historical Graph (1/2)

Select the feature from which

you want to know the

hierarchy.

The Historical Graph allows you to display the hierarchical links between the different

features of a part.

Select the Historical Graph icon.


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3 Select the Surface Presentation todisplay the surfacic hierarchical

elements.

Using the Historical Graph (2/2)

Click on plus to expand

the tree.

to Remove the Graph

Select the

to Add a Graph

Reframe the Graph

4b


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4aSelect the

Parameter Filter

button.

You can Edit and

modify a Parameter

directly by double

click on it

Double click a feature

to edit and modify it.

Quick Edition of Geometry.

1

Select the geometry

Select the Quick

Edit icon.

2

The Quick Edit allows you to quickly access to the parent elements of the selected object.

You identify the generating elements.

Informations are displayed on the

whole geometry :

G th l t l t t d i


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Green : the last element generated in

the selected geometry

Red : the direct parent of the last

generated element

Purple (with G letter) : the first

element that generate the final one

Compare with

the historical

graph.

You can Edit and

modify an element

directly by double

click on it

Deleting Useless Geometry

1 Select Delete uselesselements in the Tools

menu.

This command allows you to quickly delete all un-referenced datums, that are notparticipating in the creation of other geometrical elements.


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2

CATIA gives

you a list of

elements to

delete and ask

you to confirm

before delete

Click on Yes to

confirm.

Auto-Sorting OpenBodies

1 Select the OpenBody node in theSpecification tree.

2

This command allows you to sort hierarchically the wireframe features under theselected OpenBody.

Open a contextual menu, then

select Auto-Sort OpenBody.


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In this specificationtree certain features

are not in a

hierarchical order.

Managing Open Bodies

You will learn the following tools to help you manage Open Bodies in the

specification tree:

Creating a Group

Creating a new Open Body


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Changing the Father node of an Open Body

Duplicating an Open Body

Why Open Body Management Tools?

In V5, during the creation and trimming of surfaces, the history of parent surfaces is kept in its

entirety in order to allow for automatic update of downstream geometry following a

modification of any parent surface. Due to this fact, the specification tree can get large and

often confusing. The tools listed below help manage this tree.

Creating a GroupHides all the nodes of an Open Body except for specific nodes the user chooses to see.



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Creates a new Open Body branch in the specification tree with the optio

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