Ansys Sketching Tutorial

Customer Training Material

W k h 1Workshop 1

Sketchingg

Introduction to ANSYSIntroduction to ANSYS DesignModeler

WS1-1ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.

Release 13.0December 2010

Introduction to ANSYS DesignModeler

Customer Training MaterialIntroduction• Introduction;

– This workshop demonstrates the procedure for creating a sketch used to define the geometry of an Exhaustdefine the geometry of an Exhaust Nozzle in DesignModeler (DM).

• Prerequisites:– This workshop assumes that you have

some experience with DesignModeler, and that you are familiar with theand that you are familiar with the graphical user interface

• Note:– This workshop assumes that you have

some experience with DesignModeler, and that you are familiar with the graphical user interface



graphical user interface


Customer Training MaterialGoals

• Goals; – Starting DesignModelerStarting DesignModeler.– Drawing sketch components.– Dimensioning the sketch.– Constraining the sketchConstraining the sketch.– Modifying the sketch.– Save the project and exit.




Customer Training MaterialStarting Workbench • Create the Workbench Project; – Start Workbench R13.

• This will open the Workbench project page.• If already open click New to start a new project.

– In your working directory, save the project as “WS1”WS1 .

• It’s good practice to save the project periodically.

– ANSYS Workbench applications and application template systems can be found in the Toolbox.A ailable applications are listed nder



– Available applications are listed under Component Systems.


Customer Training MaterialStarting DesignModeler• Create a Geometry Component System;

– Under Component Systems, click LMB (Left Mouse Button) on Geometry and drag into the Project Schematic. This will create a Geometry System Cell in the Project SchematicSchematic.

– In the Geometry System Cell, click RMB (Right Mouse Button) on• This will open a menu containing options for creating or modifying geometry data.

– Click LMB on New Geometry.• This will start the DesignModeler application.




Customer Training MaterialStarting DesignModeler• Setting Units;–When working with DM the units are set when the session is first started.– Select Meter.– Click OK.




Customer Training MaterialCreate a Sketch• Create a Sketch; – Select the XYPlane in the Tree Outline and

click the Look At button to align the view t th XY lto the XY plane.

– Create a sketch on the XYPlane by clicking the New Sketch buttonthe New Sketch button.

• The new sketch will be listed under the XYPlane in the Tree Outline (Sketch 1).

– Switch to Sketching Mode by clicking on the Sketching Tab at the bottom of the Tree Outline.

Th T O tli ill b l d b• The Tree Outline will be replaced by Sketching Toolboxes.

• The Sketching Toolboxes contain all the tools necessary to create(Draw), modify, dimension



and constrain sketches.


Customer Training MaterialCreate a Sketch• Create a Sketch (Continued); – Sketching is the process of drawing the basic topology of a geometry. The

sketch is initially created approximately – exact dimensions are added later.• We will use the sketch tools to create an initial sketch as shown belowWe will use the sketch tools to create an initial sketch as shown below



• Connected lines (Polylines) can be created in one step using the Polyline tool.



C t P l liDrawing Sketch Components• Create a Polyline;

– Select the Polyline tool in the Draw toolbox.• Notice the Status Bar at the bottom of the screen.

• The Status Bar issues instructions when a tool is selected and whilst a tool is being used. Since the Polyline tool has just been selected the Status Bar is requesting input to define the start of the Polyline.

– Move the mouse pointer towards the Y-Axis until a C mark appears then click LMB once. This specifies the start of the Polyline. The first segment of the Polyline will now be displayed as the mouse is movedthe mouse is moved.

• The C mark indicates the point will be constrained to be Coincident with the Y-axis.




Customer Training MaterialDrawing Sketch Components• Create a Polyline (Continued);– Notice again that the Status Bar now

issues an instruction for the next point in th P l lithe Polyline.

• To create the next Polyline vertex, move the pointer to the right (+x). When the line is approximately horizontal, a H mark will appear on the line. Click to select the second point of the Polyline.

– If you position the next point incorrectly, y p p y,clicking RMB can be used to open a context menu allowing the operation to backed up.

– While using any sketch tool pressing the g y p gescape key cancels the operation should you need to start again.

– The Undo/Redo buttons refer to the last



completed sketch tool action.


Customer Training MaterialDrawing Sketch Components• Create a Polyline (Continued);

1. Similarly, move the pointer upwards (+y). When the line is approximately vertical, a V character will appear on the line indicating a vertical constraint. Click to select the third point of the Polyline.

2 U i thi d l t th i i P l li t h2. Using this procedure, complete the remaining Polyline segments as shown.

1 2




Customer Training MaterialDrawing Sketch Components• Create a Polyline (Continued);

2. Similarly complete the remaining Polyline segments as shown.

2




Customer Training MaterialDrawing Sketch Components3. For the last segment the line needs to be constrained to both horizontal and to the Y-Axis

(a H & C will appear).4. After the final segment has been created click RMB anywhere in Graphics Window to open

the context menu. In the menu select Closed End to close the Polyline.the context menu. In the menu select Closed End to close the Polyline.

3Final4




Customer Training MaterialView ConstraintsVi C t i t• View Constraints;– Entities are colored according to their constraint status (see key below).

• Entities can have multiple constraints. These are listed in the details view.• Exit the Polyline tool by clicking anywhere in the Graphics window and pressing the escape key (the

status bar will change to “Ready”).• Click LMB on any entity in the Graphics Window. The constraint status is shown in the Details View

together with the required constraints and the existing constraints.

Constraint Colour Code

Teal Under ConstrainedBlue Well ConstrainedRed Over ConstrainedBlack FixedGrey Undefined




Customer Training MaterialDimensioning the Sketch• Specify Dimensions;– Click the Zoom to Fit button.– Select the Dimensions Toolbox.

• Contains tools to create all common dimension types in addition to dimension editing tools.

• Select Display.– Check Name & Value. This will display

the dimension name and current value when dimensions are created.

1 2

when dimensions are created.

• Select the General tool.– Click LMB once on the edge as

shown After clicking on the edge3

shown. After clicking on the edge, move the pointer to an appropriate position and click LMB again to finalize the dimension location..

2.857H1



Dimensions are automatically named and numbered according to type and order. This dimension is named ‘H1’ since it is a horizontal dimension and the first dimension created in this session.


Customer Training MaterialDimensioning the Sketch1. Setting the dimension value.

– Under the Details View set the value of H1 to 2m, press enter.

– The sketch will update

1

The sketch will update.

2. Editing Dimension Name.– To change the name of a dimension select

2.00H1

the Edit tool.– Move the mouse pointer over the

dimension until it is highlighted then click LMB to select.

2

– The details of the selected dimension will be displayed in the Details View. Check that the dimension name is H1.

2.00H1

3. Moving Dimension.– Select the Move tool.– Select the dimension. The dimension can

2.000H1

2.000H1

3



Select the dimension. The dimension can now be moved to a new position using the mouse.

H1


Customer Training MaterialDimensioning the Sketch• Specify Dimensions and Set Values (Continued);

1. Use the General tool again to similarly apply more horizontal dimensions as shown in Image1.

2. Set exact dimension values in details menu. Sketch is updated as shown in Image2.

Image23.000H3

5 0006.317

3.115H3

Image1

1.000H2

5.000H4

2.154

H4

H2

2.000H1

H2

2.000H1




Customer Training MaterialDimensioning the Sketch• Specify Dimensions and Set Values (Continued);

– Now use the General tool again to apply vertical dimensions as shown in Image1– Set exact dimension values in details menu and the sketch is updated to Image2.

3.043V5

2.00V5

14.669V7

2.787V6

20.00V7

2.00V6

15.839V8 21.00

V8

Image1 Image2




Customer Training MaterialDimensioning the Sketch• Specify Dimensions (Continued);

– To make sketch fully constrained, specify the location of sketch from X-axis• Use the General tool. Select the point, then select the X-Axis as shown in Image1. • Place the dimension and set the value Use ‘Zoom to Fit’ to see updated sketch as shown in Image3Place the dimension and set the value. Use Zoom to Fit to see updated sketch as shown in Image3.

Image3 Image2Image1

27.16V9

55.00V9




Customer Training MaterialDimensioning the Sketch• Modifying Dimensions (Continued);– After dimensioning use the Move tool to position dimensions for greater clarity.

• (Note that all entities in the sketch are now blue. This indicates that the sketch is well defined.





F th Sk t h T lDrawing Sketch Components• Further Sketch Tools; – Select the Draw Toolbox.

• Select the Arc by Three Points tool.1. Select the first arc endpoint to be

1

pcoincident with the line as shown

2. Select the second arc endpoint in the approximate position as shown.

3 The final point defines the arc 23. The final point defines the arc radius.

2

3Final 3




Customer Training MaterialDrawing Sketch Components• Further Sketch Tools (Continued); – From the Draw Toolbox.

• Select the Line tool.11. Select the first point to be

coincident with the arc endpoint as shown. A ‘P’ indicates the line will be constrained to a point.

1

constrained to a point.2. Select the second point in

the approximate position as shown.

2

Final



Try to draw the entities closer to the actual dimensional values so that it is easier to apply constraints and edit dimensions later on.


Customer Training MaterialDrawing Sketch Components• Further Sketch Tools

(Continued); – From the Draw Toolbox.

1

• Select the Arc by Tangent tool.

1. Select the first arc endpoint to be coincident with the point as shown.

2. Select the final endpoint to be coincident with the X Axis as shownX-Axis as shown.

2

Final




Customer Training MaterialConstraining the Sketch• Adding Constraints;– Select the Constraints

Toolbox. S• Select the Tangent tool.

1. Select the first line as shown.

2. Now select the arc b it thi illabove it; this will

constrain the arc to be tangential to the line.

21 Final



The geometry will adjust to enforce a tangential condition between the first arc and line separating the two arcs. Dimensions can be added later.


Customer Training MaterialConstraining the Sketch• Adding Constraints

(Continued);– From the Constraints

T lb

Image2Image1

Toolbox. • Select the Coincident tool.

1. Select the centre point of the second arc as shown in Image1.

2. Now select the X-Axis.3. This will constrain the

centre point of the d t b

Finalsecond arc to be coincident with the X-Axis. 21 3

As a result of the centre point of the second arc being constrained to the X-Axis the



p gsize of the arc has changed. However, the tangent constraints previously applied have been maintained


Customer Training MaterialDrawing Sketch Components

• Adding a Line;– Select the Draw Toolbox.

• Select the Line tool. Final1. Select the origin as the

first point as shown. (P Constraint)

2. For the second point, select the end point of the second arc.

21




Customer Training MaterialModifying the Sketch• Extending an Edge;– Select the Modify Toolbox.

• Select the Extend tool.– Select the edge as shown

near the lower end.• This ensures the edge is

extended downwards (towards X-axis).(towards X axis).

Final

The Extend tool will extend any edge to the intersection of the next edge axis line or point



The Extend tool will extend any edge to the intersection of the next edge, axis line or point. The direction is specified by selecting the edge near to the end which is to be extended. Use the ‘Ignore Axis’ option if the extension is required to pass through the axis line.


Customer Training MaterialModifying the Sketch• Trimming Sketch Entities;– From the Modify Toolbox.

• Select the Trim tool.– Select the edge at the

position shown.• This will ensure the left

side of the edge is trimmed.

Final



The Trim tool will trim any edge at the point of the intersection with the next edge, axis line or point. The section to be trimmed is defined by the selection point. As with the Extend tool the Ignore Axis option can be used to disregard the axis line.


Customer Training MaterialDimensioning the Sketch• Specify Dimensions;

– Switch to the Dimensions Toolbox and select General tool to apply the following dimension– Set the correct value in details view and update the sketch

1.749

2

H10

4.00H10

Final

3

1Final




Customer Training MaterialDimensioning the Sketch• Specify Dimensions;– Similarly, using the General and Radius tools apply the following dimensions;

R13.05R12

4.000H10

R26.93R12



15.320H11



Specify Dimensions (Continued);Dimensioning the Sketch• Specify Dimensions (Continued);

– Now use the Angle tool to apply the following dimension;• Select entities, click RMB and select Alternate Angle, Repeat until the correct angle is selected.

1

Final3

2`29.54

A14

2




Customer Training MaterialDimensioning the Sketch• Specify Dimension Values (Continued); – Set all the dimension values in details

view and update the sketch;N t– Note

• During specifying values sketch may turn in undefined status but after all values are specified it will become fully constrained.

4.000H10

R20.00R12

`30.00A14

12.000

R25.00R12



12.000H11


Customer Training MaterialFinished Sketch– The final sketch is ready.– The sketch can now be used to generate 3D models.– From the Workbench Project Page, save the project.




Customer Training MaterialArchiving a Project• Use the Archive function from the File menu to quickly compress all project files into

one file;– Set an Archive filename (“WS1-Archive”)

Options allow additional external files to be included as required– Options allow additional external files to be included as required.



Documents

Ansys Sketching Tutorial