Running OptiStruct from HyperMesh - OS-0010



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This tutorial demonstrates how to launch an OptiStruct job from within HyperMesh. A HyperMesh database containing a fully defined OptiStruct finite element model is retrieved and an OptiStruct job is launched from the OptiStruct panel in HyperMesh.

To load the OptiStruct user profile:

  1. Launch HyperMesh.

The User Profiles dialog appears upon start-up by default.

  1. If the User Profiles dialog is not visible, select Preferences from the toolbar and choose User Profiles….

  2. Under Application:, select the OptiStruct radio button.

  3. Click OK.

This loads the OptiStruct user profile. It includes the OptiStruct template, macro menu, and import reader. It simplifies the menu systems to give access to only the functionality of HyperMesh that is necessary for using OptiStruct.

The name OptiStruct will appear along with HyperMesh in the title bar.

To retrieve a HyperMesh database:

  1. From the File pull-down menu on the toolbar, select Import, and then HyperMesh Model….

An Open file… browser window pops up.

  1. Select the plate.hm file, located in the HyperWorks installation directory under <install_directory>/tutorials/os/.

  2. Click Open.

The plate.hm database is loaded into the current HyperMesh session, replacing any existing data.

Note that the location of plate.hm is now displayed in the file: field.

image\file_loc.gif

To launch an OptiStruct job:

  1. Choose the Analysis page and select the OptiStruct panel.

You can also choose OptiStruct from the Applications pull-down menu on the toolbar.

  1. Click save as….

A Save file … browser window pops up.

  1. Select the directory where you would like to write the OptiStruct model file and enter the file name, plate.fem, in the File name: field.

The .fem filename extension is the suggested extension for OptiStruct input decks.

  1. Click Save.

Note the name and location of the plate.fem file now displays in the input file: field.

  1. Set the memory toggle, located in the center of the panel, to memory default.

  2. Click the run options switch, located on the left side of the panel, and select analysis.

  3. Set the export options: toggle, underneath the run options switch, to all.

  4. Click OptiStruct.

This exports the OptiStruct input file and launches the OptiStruct job. If the job is successful, new results files can be seen in the directory where the OptiStruct model file was written. The plate.out file is a good place to look for error messages that will help to debug the input deck if any errors are present.

The default files written to your directory are:

plate.html

HTML report of the analysis, giving a summary of the problem formulation and the analysis results.

plate.out

OptiStruct output file containing specific information on the file set up, the set up of your optimization problem, estimate for the amount of RAM and disk space required for the run, information for each optimization iteration, and compute time information. Review this file for warnings and errors.

plate.res

HyperMesh binary results file.

plate.stat

Summary of analysis process, providing CPU information for each step during analysis process.

plate.H3D

HyperView binary result file.

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