In this chapter using HyperView
? HvTrans to translate ODB files to H3D files
? View multiple mode shapes simultaneously
Overview of HvTrans
HvTrans is an Altair tool that translates solver results files, such as ODB files, to H3D files. An H3D file is an Altair proprietary file containing model or results data or both.
HvTrans runs in GUI mode and batch mode. From HvTrans, you select the results you want extracted to an H3D file. You can also specify whether or not to include model information in the H3D file from the result file or corresponding input file. Because only some information is extracted, the H3D file is usually smaller than the solver output file. This is a benefit. When you want to work with a smaller results file, use HvTrans to create one.
H3D files can be read into HyperView and HyperView Player. HyperView Player
enables your organization to visualize 3D CAE models and results via the Internet. HyperView Player includes a web browser plug-in as well as a standalone executable for both PC and UNIX. It can be downloaded from Altair’s web site www.altair.com and used on Windows for free; no license is required. H3D files are useful when you want to focus in on certain information and share it with others.
H3D files can also be created from inside HyperMesh and from HyperMesh results translators using the –h3d option.
Although HyperView can directly read ODB files and the ODB file from the brake system analysis is only 3.3 MB, the next exercise demonstrates creating an H3D file from the ODB file using HvTrans.
On Windows, open HvTrans by clicking HvTrans in the start menu under Altair HyperWorks, Altair Tools. On UNIX, execute the altair/scripts/hvtrans script to open HvTrans. Below is an image of the HvTrans window and following are descriptions of some of the options and sections in it.
HvTrans window
Table 9.1: Options in HvTrans
Item no. in Figure 9.1
Option Name
Function
1
File menu
Select results file and config file. Exit HvTrans.
2
Select Subcase
In a results file with multiple simulations, select a simulation to convert to H3D. Multiple selections are allowed.
3
Compression Options
Compress the created H3D file
4
Browse…
Select the model file to include in the H3D file
5
All/None/Reverse
Select a set of results or components
6
Result Dimension
The dimensions available for the selected result(s)
7
Result Type
Select result types to be put in H3D file
8
Ply
Used with composite material results
9
Components
Components of selected results
10
Translate…
Select the results file name (*.h3d)
11
Include model with translated results
If no, create a H3D with only results (smaller)
Exercise 1: Create H3D file and load it in HyperView
Create an H3D file containing only the mode shapes for the frequency analysis *STEP. Do not extract the results for the contact analysis or dummy *STEPs to the H3D file. Then load the H3D file into HyperView.
Create H3D file
1. Open HvTrans from the Windows Start Menu.
2. From File, select Open Result File.
3. Select the ODB file BrakeDisc_Complete.odb.
Notice the Current subcase is CONTACT_STEP.
4. Click Subcase and unselect CONTACT_STEP and DUMMY_STEP. Leave MODAL_STEP selected.
5. Leave all the modes under Simulation selected.
6. Leave all other defaults in the HvTrans window set as they are.
7. Click Translate.
8. Specify a location and name for the H3D file you will create.
9. Click Save.
10. From File, select Exit.
The H3D file is created and it is approximately 374 KB.
Open H3D file in HyperView
1. From File in the menu bar, select New and click Yes in the pop-up window.
2. Enter the Load model panel.
3. In the menu area, click the Load model file browser button and select the file BrakeDisc.h3d.
This file name automatically appears in the Load results file name field.
4. Click Apply.
Exercise 2: View multiple mode shapes simultaneously
Create four windows on a page and view the mode shapes 1, 2, 3 and 4 simultaneously.
Select the frequency analysis step
1. Click the status bar to open the Load Case And Simulation Selection window.
Notice MODAL_STEP is the step listed under Load Case. This is because only the results for this step were extracted to the H3D file.
2. Click OK.
Create contour plot of displacement results
1. Enter the Contour panel.
2. Displacement (v) under Result type is already selected.
3. Click Apply.
Create a four window page layout
1. Click Edit from the menu bar and select Copy Window.
2. Click Page from the menu bar and select Layout.
3. Select the four window icon from the Page Layout pop-up window.
4. Activate a blank window. Then click Edit from the menu bar and select Paste Window.
5. Paste the copied window in the other two blank windows.
Animate mode shapes 1, 2, 3 and 4 simultaneously
1. Click the switch to the right of the Animation Controls icon 
2. Enter the Animation Controls panel.
3. Click Time Scales to open the Time Scales window.
4. Enter 3 in the Delay field for window 1.
5. Enter 2 in the Delay field for window 2.
6. Enter 1 in the Delay field for window 3.
7. Leave the 0 in the Delay field for window 4.
8. Click Apply.
9. Click Close.
10. Activate window 4 (lower, right window).
11. Click the switch next to the traffic light icon and select Linear/Modal.
12. In the status bar, click the right most right arrow to set the simulation to mode 4.
Notice window 3 is now set to Mode 3, window 2 is set to Mode 2 and window 1 is set to Mode 1.
13. Click the Linear/Modal icon to animate the modes.
Scale the deformation of the mode shapes
Without stopping the modal animation, scale up the deformation.
1. Enter the Deformed panel.
2. Enter 10 in the Uniform field.
3. Click Apply.
Exercise 3: Save HyperView session as MVW file
1. Click File from the menu bar.
2. Select Save Session File As from the drop down list.
3. Specify a path and file name for the .mvw file you create.
4. Click Save.
Post-processing of the brake system frequency analysis is complete.
http://www.cadfamily.com/HTML/Article/Post-processing%20Brake%20System%20Analysis_541.htm
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