ansys 10.0 workbench tutorial - exercise 2, dimensions and parameters
TRANSCRIPT
© 2006 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary
ANSYS ED Workbench TutorialANSYS ED ANSYS ED Workbench TutorialWorkbench Tutorial
DimensionsAnd
Parameters
DimensionsDimensionsAndAnd
ParametersParameters
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WelcomeWelcome
• Now that you have completed Exercise
1, you should be familiar with the basic
methods, tools and concepts that comprise the ANSYS Workbench. Let’s
begin Exercise 2.
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Using ParametricsUsing Parametrics
• The methods taught in this tutorial apply equally well to both attached parametric CAD and DesignModeler files.
• For the purposes of this tutorial we will be
using the DesignModeler file produced in Exercise 1 of this tutorial.
• When using attached CAD systems dimensions and parameters would be defined in your CAD models.
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Exercise 2 - OutlineExercise 2 - Outline
• Dimensioning and Parameters
1. Dimensioning your model
2. Dimension naming and display
3. Exporting parameters
4. Using parametric equations
5. Defining the Environment and Solution
6. Examining Results
7. Making Parametric Changes
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Getting StartedGetting Started
If you are starting Exercise 2 without previously
completing Exercise 1 copy the following files to a
local working directory
…\ANSYS ED Tutorial\Samples\Exercise1.wbdb
…\ANSYS ED Tutorial\Samples\Exercise1.agdb
…\ANSYS ED Tutorial\Samples\Exercise1.dsdb
…\ANSYS ED Tutorial\Samples\Exercise1.eddb
Then Click Here
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Opening Exercise1 filesOpening Exercise1 files
If you previously saved Exercise1
in ANSYS ED you can open your
previous project from the
ANSYS Workbench Start Page
Make sure that the Open: pull-
down is set to “Workbench
Projects” then left mouse click
on Exercise1
If Exercise1 is not in your list you will need to Browse for
the Project in the directory you copied the sample files to
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The Project PageThe Project Page
Note: You should now be on the Project Page with
the contents as shown above
1. Left click on the Exercise1
DesignModeler Geometry
2. Left click on Open copy
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Step 1A – Opening your sketchStep 1A – Opening your sketch
1. Expand the
XYPlane in the
Tree Outline and
select Sketch 1
3. Select the Sketch Mode
2. Turn off the 3D
model display
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Dealing with Over ConstraintsDealing with Over Constraints
• What is an Over Constraint?
– When you dimension your model you are defining rules as to how your model will change when the dimension or its associated parameter is modified.
– An “Over Constraint” where more than one rule or dimension are trying to change or control the same geometry.
• As you proceed with dimensioning, you may on equation over constrain your model.
• You will need to delete one of the two offending constraints (dimensions or rules) when this occurs.
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Deleting Unwanted DimensionsDeleting Unwanted Dimensions
1. Select “Modify”
from the Sketching
Toolbox
2. Select the Dimension
to be deleted
3. Hit the “Delete” key
on the keyboard
If you create
a dimension
that you do
not want in
this exercise
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Step 1B - DimensioningStep 1B - Dimensioning
1. Select “Dimensions”
from the Sketching
Toolbox
2. Select “General”
3. Select each line to be dimensioned and
holding the left mouse button drag the
dimension to a desired location
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Step 1C - DimensioningStep 1C - Dimensioning
1. Select “Horizontal”
2. Select the vertical axis
and an edge
3. Drag and
drop the
dimension
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Step 1D - DimensioningStep 1D - Dimensioning
1. Select “Vertical”
2. Select the horizontal
axis and an edge
3. Drag and
drop the
dimension
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Step 2A – Displaying DimensionsStep 2A – Displaying Dimensions
In the “Dimensions” tools
select both Name and Value
It is often desirable to be able to view both
dimension names and values
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Step 2B – Locating DimensionsStep 2B – Locating Dimensions
1. In the “Dimensions”
tools select Move
2. Using the left mouse button
drag and drop dimensions to
new locations for clarity
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Step 2C – Editing DimensionsStep 2C – Editing Dimensions
1. Select “Edit” from the
Dimensions tools
2. Drag over and select the
dimension to be modified
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Step 2D – Examine DetailsStep 2D – Examine Details
Note the Details view
now contains your
dimension detail
We are going to select and modify the
name and values of our each of our
dimension by selecting and changing the
details to those shown on the next page
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Step 2E – Edit 4 DimensionsStep 2E – Edit 4 Dimensions
Note the edited values
• You will need to repeat
the edit operation for
each dimension
Select left mouse
click and enter
each dimensions
name and value
Note: Leave
the values of
the X and Y
offsets
unchanged
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Step 3A – Exporting ParametersStep 3A – Exporting Parameters
1. Select and return to draw mode
2. Scroll through your sketch details
and locate your dimensions
Note: The check boxes that control the
export of parameters
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Step 3B – Naming ParametersStep 3B – Naming Parameters
Note you will need to
define and export each
of your dimensions as
parameters
1. Select the
check box
on a
dimension
2. A dialog will appear
3. For the purposes of
this exercise
remove the
“XYPlane.” prefix
from the name and
click “OK”
Note when you click
“OK” a “D” shows up
in the check box
indicating a parameter
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Step 3C – Verify ExportStep 3C – Verify Export
Verify that all of your parameters have been
exported (Note the “D” annotations)
Select and return to Modeling Mode
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Step 3D – Export 3D ParametersStep 3D – Export 3D Parameters
1. Select the Extrusion from the Tree Outline
2. Scroll and find the
Extrusion Depth in
the Details View and
select the check box
3. Change the parameter name to
“Thickness” and click “OK”
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Step 4A – Using ParametersStep 4A – Using Parameters
1. Select Parameters from the toolbar
Note the appearance of the Parameter Manager
2. Select “Parameter/Dimension
Assignments”
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Step 4B – Using EquationsStep 4B – Using Equations
1. Change the equations above to the equation below
setting the offsets of our plate from the XY Origin
2. Select “Check” to verify
your equation syntax
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Step 4C – Validate EquationsStep 4C – Validate Equations
1. Validate your inputs and syntax 2. Close the
Parameter
Manager
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Step 4D – Update the ModelStep 4D – Update the Model
3. Note that your sketch has
been updated based on your
equations
1. Note that the
extrusion is out of
date (lightning
bolts)
2. Select “Generate” to update your model
4. Select the project folder tab to return to the Project
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Step 4E – Naming ModelsStep 4E – Naming Models
1. Select the DesignModeler name
using the left mouse button
2. Select the name again with the left
mouse button
3. Rename the model to “Exercise2”
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Step 4F – Geometry OptionsStep 4F – Geometry Options
1. Make sure the
DesignModeler
Exercise2 is selected
Note that attributes, Named selections and
Material properties are not selected
Note that prefix filters have been defined to
limit parameter input and exchange
2. If the “Default Geometry Options”
are not visible select the title bar to
expand the visible options
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Step 4G – Setting FiltersStep 4G – Setting Filters
1. Select “Attributes”, “Named
selections” and “Material
Properties”
2. Delete (blank out) filters
3. Select “Tools>Options”
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Step 4H – Filtering OptionsStep 4H – Filtering Options
Note: Defaults for these
options can be set using
the “Options” menu in
the ANSYS Workbench
To get to the options select “Tools>Options” in the
Menubar
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Step 5A – Start a SimulationStep 5A – Start a Simulation
1. Verify that the geometry for
Exercise 2 is selected
2. Select (start) a “New Simulation”
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Step 5B – Your New SimulationStep 5B – Your New Simulation
Note that you new Model has been
added to your existing Project
Simulation
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Step 5C – Renaming ModelsStep 5C – Renaming Models
Using a right mouse click select your
Models. Than select rename and
rename your models as shown
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Step 5D – Copying SimulationsStep 5D – Copying Simulations
Copy your Environment and
Solution options to your new
Simulation by using the shift key to
select multiple items. Then use a
right mouse click to copy the items
and paste them into your new
Environment and Solution
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Step 5C – Setting the MeshStep 5C – Setting the Mesh
1. Select the Mesh
2. Set the Mesh Relevance to -100
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Step 5D – Reselecting TargetsStep 5D – Reselecting Targets
Note: Question marks and lightning bolts
indicate that Simulations have not been
run or are out of date.
The use of Named Selections to enhance
these capabilities are covered in the next
tutorial
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Step 5E – Reselect GeometryStep 5E – Reselect Geometry
Select “Fixed Support’ In the Outline
Note that because our model is new
no geometry selections exist
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Step 5F – Redefining ConstraintsStep 5F – Redefining Constraints
2. Using techniques used in
Exercise 1 select the
faces to be supported
1. Select Geometry
3. Select Apply
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Step 5F – (continued)Step 5F – (continued)
1. Verify that you have selected all four faces
2. Select “Pressure” and then geometry
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Step 5G – Refining LoadsStep 5G – Refining Loads
Note: Again we need to reselect geometry in our new model
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Step 5G – (continued)Step 5G – (continued)
1. Again select “Geometry”
2. Select the face on which the
geometry is to be applied
3. Select apply and validate inputs
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Step 6A – Generating ResultsStep 6A – Generating Results
Note that only lightning bolts remain in the outline
Select Solve
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Step 6B – Reviewing ResultsStep 6B – Reviewing Results
Feel free at this point to review your results (If
needed review Exercise 1 in the ANSYS ED
General Tutorial)
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Step 7A – Using ParametersStep 7A – Using Parameters
1. Return to the
Modeler by
selecting the
folder tab 2. Open Parameters
3. Change the length of the plate to 120
4. Close the Parameter Manager
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Step 7E – Updating GeometryStep 7E – Updating Geometry
1. Select your new
Exercise 2
Model
2. Select “Update Use Geometry Parameters”
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Step 7F – Updating SolutionsStep 7F – Updating Solutions
Note your new
Model and the
Width to Length
Ratio
Note the Solution
(lightening bolts)
Select Solve
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Step 7G – Reviewing ResultsStep 7G – Reviewing Results
1. Review your results
as you wish based on
methods covered in
Exercise 1
2. Select the folder tab to
return to the
DesignModeler
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Step 7H – Making ChangesStep 7H – Making Changes
1. Open the
Parameter
Manager
2. Change the
Width to 180
3. Select “Close”
4. Select “Generate” to update the model
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Step 7J – Updating SolutionsStep 7J – Updating Solutions
Select the Simulation folder tab
to return to your Simulation
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Step 7K – Updating GeometryStep 7K – Updating Geometry
1. Select your
Exercise 2
Model
Geometry
2. Select Update from Geometry
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Step 7L – Updating SolutionsStep 7L – Updating Solutions
Note that:
Your model has been updated
Your loads and constraints are in place
A new “Solve” is required
Select “Solve”
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Step 7M – Reviewing ResultsStep 7M – Reviewing Results
1. Review your results
2. Select the “Project”
folder tab to return to
the Project Page
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Step 7N – Saving ResultsStep 7N – Saving Results
1. Select “Save All”
2. Select “Exit” to close the ANSYS Workbench
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When saving filesWhen saving files
• Note that every ANSYS Workbench Project contains only one “.dsdb” file but multiple “.agdb” files if models are copied.
– This is because
• Each DesignModeler file holds in parameters as unique
– While
• Models are combined in the Simulation to allow the cloning, copying or sharing of loads, supports, etc…
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Working with CAD systemsWorking with CAD systems
• Remember:
– Parameters and parameter updates work equally well when using the
Workbench with active parametric CAD systems
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CongratulationsCongratulations
• You have completed Exercise 2 of the ANSYS ED Workbench Tutorial
• Click here if you wish to continue with the next exercise