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Using symmetry while Postprocessing in HyperView
It is not uncommon among analysts to create only a partial geometry for analysis, if the structure is
symmetric and its behaviour under loading can be replicated on the reduced geometry.
Symmetry visualization allows partially modelled geometry to be shown in full extent by reflection
and or duplication.
The Symmetry dialog allows you to define options which can be used to visualize what a whole
model would look like when you are only using a half, quarter, or a partial segment of the model.
Step 1 Load the results of a symmetric model
In this tutorial we will look at an axisymmetric model
1. From the menu bar, select File > New > Session to delete the contents of the current
HyperView session.
2. Click the Open Model button file > Open > Model on the Standard toolbar to enter the Load
Model panel.
Note If the Open Model button is not visible, click on the Open drop-down menu and select the
Open Model option.
3. Click the Load model file browser, The Load Model File dialog is displayed.
4. Open the file axi-symmetry_full_geometry.h3d
Step 2 Access the Symmetry dialog in HyperView
Access the Symmetry dialog, click on the Symmetry button on the Visualization toolbar, Or
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Select the Symmetry option from the Model menu (Model > Symmetry). Then go to the circular tab
Step 3 Apply the symmetry
Use the Components input collector to select, click on the displayed component in the screen, we
see a message indicating the component selected “Top Half” as below
Note - If no selection is made, all parts of the model will be used by default.
1. Use the System input collector to select the local system id 2 to be used for copying, Global
or User Defined system 2 in this model will yield the same result.
2. Select circular copy alone after moving this to the top of the list with the help of the blue
arrows on the right hand side of the operation order menu. This generates geometry that is
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spaced in a circular array. The number of copies and the direction in which the geometry is
copied can also be controlled using the available options.
3. Rotational axis (Circular) - Use the drop-down menu to choose Z so that the reflection or
copy will be displayed in the Z direction.
4. Count (Circular) Input the number of circular copies to be displayed in angular sectors.
Starting from zero degrees, the angular placement of subsequent sectors is (total
angle/count). In this tutorial model we will input a count of 36 as the member spans 10
degrees.
5. Total angle (Circular) - Specify the offset distance (in degrees) relative to the original location
to be used. In this model we will specify 360 degrees
6. Click on Auto fit - This automatically adjusts the view so that model and duplicated geometry
fit in the window. If this option is not selected, the view is not adjusted and parts of the
reflected/copied symmetry could move out of the window.
Click Apply to apply the settings/changes made to the symmetry.
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Click OK to apply the settings/changes and exit the Symmetry dialog.
We can now contour the results on the whole model as it is in reality
Compare this with the solved symmetric model alone.
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