Include/exclude elements from analysis (Nastran Include file?)

Hunter Orensztein

Hello,

Is it possible to include/exclude specific elements from an analysis? I have a model I've created in Hyperworks/Hypermesh and I have two configurations. The only difference between the 2 is the placement of mass elements throughout the model. I could create two separate models, but is it possible to accomplish this in one model? 

I know in Nastran there are "Include" files that can reference difference elements (Bulk entry i think?) or Femap has the option to select a specific group of nodes and elements in the "Portion of Model to Write" section. Is something similar possible in Hyperworks/Hypermesh that would allow me to run analyses on two configurations in one model?

Thanks!

Brett Ramsey_20633

There are two ways you can do this. You can go the includes route just as you would in a Nastran pre/processor, or you can use the entity state browser. They both use the same principle you are only writing certain information to the fem file to solve. 

 

To bring up the Includes browser go into the Assembly menu and select the includes ribbon, which can be seen below.

Here you can organize what you want to be in each include. Once that is done you can right click on the desired include and export it. 

To bring up the entity state browser you can go to view and select entity state browser. 

The browser contents can be seen in the image above. Active keeps the information in the hm model, and export tells it whether or not to right the entity to the fem file. As an example, the property test would be in my hm model, but would not be written to the fem. 

 

Hope this helps