Properly define a material for use with Helius PFA.
If Helius PFA is used to provide the constitutive relations for a particular composite material, Nastran requires the use of the MATPFA entry. The data options for the MATPFA entry are used to define the specific type of multiscale constitutive relations that should be used for the material.
Specific requirements for this entry are discussed later (Use a Text Editor to Convert Input Files). For now, be aware that this entry identifies composite materials processed by Helius PFA and identifies the specific form of multiscale constitutive relations that will be used.