13-10-2017[GJ]

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

13-10-2017[GJ]

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

13-10-2017[GJ]

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.

13-10-2017[GJ]

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.

13-10-2017[GJ]