612 - Stylized Design: A Hands-on Experiencecommunity.plm.automation.siemens.com/siemensplm/attachments...612 - Stylized Design: A Hands-on Experience ... to see where the curvature

Unrestricted © Siemens AG 2013 All rights reserved.

4th Generation VLC courtesy of Edison2

#SEU13

612 - Stylized Design: A Hands-on Experience Doug Stainbrook, Solid Edge Field Support Team Leader, Siemens PLM Software


Page 2 Siemens PLM Software

4th Generation VLC

courtesy of Edison2

Agenda: 612 - Stylized Design: A Hands-on

Experience

Who am I?

What you will learn

Solid Edge capabilities

Demonstrations

Benefits of this topic

How to learn more



About: Doug Stainbrook

Doug Stainbrook

Solid Edge Field Support Team Leader

Siemens PLM Software

Doug Stainbrook is the team leader for the Solid Edge Field Support

team. Before joining the Solid Edge team, Doug spent 10 years as a product

designer in the jig and fixture, automated machinery, plastic product, and

injection mold design industries. In 1999, he became a Solid Edge Application

Engineer in Pennsylvania, traveling the U.S. East coast, supporting resellers with

Solid Edge demonstrations and pre-sales support. In 2000, Doug moved to

Huntsville, Alabama, home of Solid Edge development to work in the Field

Support group.



What you will learn

In this hands-on experience, we will explore modeling a stylized part using many

of the enhancements in Solid Edge ST6. We will look at how to use the tools in

ST6 to create smooth and flowing stylized parts like you see on the shelf at your

local department store. We will also take a look at some new visualization and

inspection tools to make sure that your part is exactly what you had in mind at

the beginning of your design process. If your company makes stylized

components, you will want to be sure to check this out!



Surface Modeling

• Surface based features

• Edges Rule

• Curves a major part of

model definition

• Highlight lines

• Silhouette edges, flow lines

• But… surface shape is still important

• Edges and faces are mainly

Bspline based

• Typically start with a wire frame and

add surfaces

• Aesthetics is primary concern,

function is secondary



Surface Modeling

• A Surfacing Approach

• Exact edge control

• Edges are developed through

character curves



Surface Modeling

• Character Curves

• Hard Edges

• Actual edges used to help define the

“flow” of a surface

• Typically are of importance for

aesthetic definition

• Soft Edges

• Horizon edges are typically visible

from front, top, and end views

• Important in defining the overall

shape of the model

Hard Edges

Soft Edges



Creating Curves

• 2D Curve

• Bspline Curve created on a sketch plane

• Creating by clicking 3 or more points

adds edit points and control vertices

• Click and drag to define a freehand curve

adds only control vertices

• Keep it simple!

• Less edit points make the curve

easier to adjust into smooth shapes



Creating Curves

• 2D Curves can be simplified from the

Command Bar

• Increase the Degree to add more control vertices

to the curve



Creating Curves

• Keypoint Curve

• Creates a 3-D curve through a set of two or more points

• The points can be points you create with the

Point command, keypoints on wireframe

elements and edges, or points in free space

• Endpoint tangency can be set and adjusted

depending on what it is connected to



Creating Curves

• Curves can also be defined by:

• Cross Curves which are created by projecting 2

curves and determining their intersection for a

resulting curve

• Intersecting surfaces

• Projected sketches onto a surface

• Contour curves

• Sketching a curve directly onto a surface



Curvature

• Curvature between faces can be defined as: (C0, C1, C2 or G0,

G1, G2)

• Sharp corner has no curvature continuity = C0

• Tangent Continuous = C1

• Reflections may have a

defining break between the

surfaces

• Curvature Continuous = C2

• Much more aesthetically

appealing reflections that

flow smoothly from one

surface to the next

• This is the most desirable type of continuity for

Industrial Designers especially for consumer product designs



Curvature

• Curvature can be visualized using Curvature Combs

• On 2D Curves

• On 3D Curves

• Along U and V lines

• Along planes intersecting a surface

• Numerical reporting on radius

of curvature

• Adjustable magnitude and density

• Illustrates points of inflection

• Lines have infinite radius so

magnitude = 0



Curvature

• Zebra Stripes

• Striping gives quick indication of continuous edges between

faces



Curvature

• Tangent Continuous Rounds - C1

• Zebra Stripes align at the

edges, but do not transition smoothly



Curvature

• Curvature Continuous Rounds – C2

• Zebra Stripes align at the

edges and form a smooth transition



Curvature:

Solid Modeling –vs.- Surface Modeling

• With traditional solid modeling, designers typically use sketch

elements like lines and arcs to define extrusions and cuts in a

solid model

• Sketched fillets and rounds are tangent to lines and other arcs

• Can’t define curvature in the sketch element unless using

Bspline curves



Curvature:


• The result is reflections that have abrupt changes and it is clear

to see where the curvature changes from one patch to the next



Curvature:


• If this model was created using surface modeling techniques with

curvature continuous 2D and 3D curves, the result is much more

appealing!



Typical Workflows

• Research

• Marketing, competitive analysis, ergonomic studies, etc.

• Ideation

• Create several 2D

fully rendered sketches

• 3 or so candidates

selected, 1 final

concept decided upon



Typical Workflows

• Concept development

• Create physical model, foam, clay, etc.

• Product Development

• CAD - Control drawings, model, etc.

• CAE analysis, prototypes, etc.

• Production

• Manufacturing tooling



Typical Workflows

• Step 1: Create Control Drawings

• Drawing 2D sketches on reference

planes or import

• Drawing 2D sketches in draft and

copy/paste

• Inserting graphic images and

tracing over

• Step 2: Use 2D geometry

to develop 3D curves

• Projections and Intersections



Typical Workflows

• Step 3: Use 3D curves to develop surfaces.

• Some additional 3D curves are obtained from surfaces.

• It is common to use Strip Surfaces to ensure continuous

curvature across the mid-line on symmetric parts

• Over-Building surfaces is also common to

extend, trim and intersect surfaces to get

the final design

Strip

Surfaces



Typical Workflows

• Step 4: Create a solid and add appropriate

solid based features

• Holes, stiffening ribs, rounds, thin wall

operations, and other solid

modeling features

• Step 5: Tweak

• Analyze curvature and

edge continuity

• Modify character curves,

surface tangency, etc.



Surface Modeling Hands-on

• The goal is to finish modeling the body of a Jig Saw.

• Need to add a Swoosh feature to the main body

• Need to add a Headlight feature

• The Swoosh

• Open SawAssm.asm from the Design folder

• Change the config to 01-Jig Saw Body

• Change the Display to “Working”

• In-place-activate into the

DESIGN-JigSawBody.par




• Zoom in on the bottom corner and enable High Quality mode

• Show the SWOOSH SKETCH

• Create and Offset Surface of the main body

• 2.00 mm offset

• Project the SWOOSH SKETCH onto the surface




• Trim the surface with the projected

SWOOSH SKETCH

• Select the regions to remove

• Show Reflective Plane from

Surfacing Tab




• Uncheck the two design bodies (master checkbox)

• Create three Ruled Surfaces

• Normal to Face

• 2.50 mm

• Turn off reflective plane

• Mirror the geometry about the CENTER PLANE

• Select four bodies

• Stitch

• Round the edges 2.0 mm

• Check the JIG SAW BODY design body to display

• Union the swoosh to the JIG SAW BODY

• Part paint the swoosh feature Dull Black

• SAVE the part




• Offset the upper front black face 1.00 mm

• Copy the inside surface of the handle

on the same side

• Hide the design body and show the

HEADLIGHT PROJECT SKETCH

• Go to a Front View to see how the sketch will start the design

• Project the sketch onto the offset surface

• Hide the sketch and show the

HEADLIGHT SIDE PROFILE sketch

• Create an extruded strip surface from this sketch

• Hide the sketch




• Create a Keypoint curve starting at the top of the

strip surface and ending at the projected sketch

• Add two keypoints in the middle as you create the curve

• Set the top end tangency condition to

Tangent Continuous and the lower end

tangency condition to Curvature Continuous

• Switch to a Right view and drag the nodes

like shown

• Hide offset surface




• Create a BlueSurf from the curves to the Strip surface

• Click Preview

• From the visualization options

• Check “Show Visualization”

• Check “Show tangency control handles”

• Uncheck Direction 1

• Preview the BlueSurf

• Slide the Magnitude handle for

Direction 2

• Now change the tangency condition on

the strip surface side to Tangent

Continuous

• Note the curvature comb changes




• Insert a Sketch

• .35 along the strip surface profile curve

• Finish the BlueSurf

• Edit the profile of the inserted sketch

• Simplify the curve

• Make the top edit point H/V with the endpoint

• Use Local edit to move the next point to

make the curve more rounded

• Hide the strip surface, curves

sketches and BlueDots

(Quick access toolbar)

• Turn on the Reflective display (F4)




• Show the Angle Plane

• Create a Ruled Surface around the

curved edge

• Use “Taper to Plane” option and

select the Angled plane

• 21.00 mm x 2.00°

• Disable Reflective display (F4)

• Use Intersect command to trim the Ruled

surfaces and Copied surface to each other

• Mirror copy part the three surfaces

about the CENTER PLANE

• Stitch into a solid

• Creates a construction solid




• Toggle the Construction to a Design body

and rename to HEADLIGHT

• Show the JIG SAW BODY (it should be active)

• Boolean Subtract the HEADLIGHT from the JIG SAW BODY

• Hide the JIG SAW BODAY and Activate the HEADLIGHT

• Show the HEADLIGHT CUTOUT sketch and

select the cutout command

• Select from sketch

• Cut 20.00 mm deep

• Hide the sketch




• Use Redefine surface to create an editable surface in

the cutout area

• Check the Replace Face option in the options dialog

• Insert a sketch coincident with the CENTER PLANE

• Edit the curve to make the face slightly concave

• Hide sketch and plane

• Thin Wall the HEADLIGHT body and

leave the back face open

• 2.00 mm

• Add a circular cutout for a bulb

under the ledge of the

HEADLIGHT feature




• Add a Keypoint curve down the center of the opening

• Curvature Continuous at the top (default value is fine)

• Normal to Face at the bottom (-.010)

• Add a BlueSurf (to create a lens)

• Add the Keypoint curve as a Guide Curve

• ADD a new body – LENS

• Thicken the BlueSurf .200 mm in both directions

• Use Part Painter to make the Lens

body feature Glass




• Make the JIG SAW BODY the active Body

• Boolean Union the JIG SAW BODY and the HEADLIGHT bodies

• Hide ALL Surfaces, curves and sketches

• Add a 2.00 mm radius to the HEADLIGHT area

• Add a 10.00 mm to the intersection

between the bodies

• Part Paint the HEADLIGHT and

round Features Black (Dull)




• Set the view style to High Quality

• Enables Bump Maps

• In Face Styles, add a pebble bump

map to the _Rubber Grip style

• Use Part Painter to paint the

top two surfaces of the handle

grips with _Rubber Grip




• CONGRATULATIONS!

Documents

612 - Stylized Design: A Hands-on Experiencecommunity.plm.automation.siemens.com/siemensplm/attachments...612 - Stylized Design: A Hands-on Experience ... to see where the curvature