Transferring CAD assignments from NX to HyperMesh

When you import a part geometry from NX to HyperMesh as a JT file, any Granta MI materials assigned in NX can be transferred to HyperMesh. This preserves the associations between the CAD assignments and the part geometry, and enables you to assign data for simulation.

In NX, you can assign materials using either MI Materials Gateway for NX , or MI Materials Gateway for Teamcenter with NX, and then export the part model from NX as a JT file.

When you import the JT file to HyperMesh, the Granta CAD assignments will be visible in MI Materials Gateway for HyperMesh, as material references assigned to the components of the part geometry.

You can then use these CAD material references to assign the data required for simulation in HyperMesh.

Note: To enable the assignments to be transferred to HyperMesh correctly, MI Materials Gateway for NX and/or MI Materials Gateway for Teamcenter with NX must be configured to write data to the Body level only (DisablePartLevelAttributesWriting = true) in your Granta MI application server configuration. For more information, see your Granta MI administrator.
  1. When exporting the JT file from NX, ensure that the configuration file that controls how the JT file is exported sets getAttributes = true.

    By default, NX uses a configuration file tessUG.config that is located in the NX installation folder. For example:

    To enable Granta MI assignments to be included in the JT file, ensure that the configuration file used for the JT export contains the following setting in its ugConfig{ } block:

    getAttributes = true

    For example:

  2. When importing the JT file into HyperMesh, ensure that the Import Geometryis configured with the following settings.
    1. Select Import > Geometry.
    2. In the File type list, select JT.
      Warning: Selecting File type: Auto Detect may result in assigments on bodies in the NX model being imported at the Part level rather than the Body level.
    3. Click Import Options, and in the CAD Import Preferences select:
      • Hierarchy as > Parts
      • Split Components by > Component
When you open MI Materials Gateway for HyperMesh, the Granta CAD materials are visible in the assignments panel in grayed-out text. This indicates that the part geometry contains a reference to a material that is not currently in HyperMesh.

To bring the data required for simulation into HyperMesh, you need to re-assign the material. See Using materials assigned by a CAD designer.

Alternatively, you can assign a default simulation model to all components.