Modify the Material Definition

Add the appropriate Helius PFA material to the input file.

Helius PFA uses the MATPFA entry instead of the conventional material definitions. In this step, the MATPFA entry is added and formatted for use with Helius PFA.

  1. Locate the material definition by searching for the MAT1 entry. The MAT1 entry defines a standard isotropic material.

  2. Replace the MAT1 entry with the following MATPFA entry:

    MATPFA, 1, 9031, 1, MCT, 0.01, 0.001, INSTANT, OFF,
, , AMBIENT, , , 1

    where 9031 is the material identification number for the Tutorial_1 material we created with Composite Material Manager previously. Note, this number may vary from computer to computer. Refer to the HPFAMatDB.xml file to determine the appropriate material identification number on your machine.

    The MATPFA entry, as defined here, instructs Nastran to use the MCT failure criterion with instantaneous degradation. Refer to the Define a Helius PFA Composite Material section for more detailed information on the MATPFA entry.

Parent page: Tutorial 1 - Modify an Autodesk Inventor Nastran Input File for use with Helius PFA