Properly define a Helius PFA material.
If Helius PFA is used to provide the constitutive relations for a particular composite material, ANSYS considers the composite material to be a "user-defined material". Consequently, ANSYS requires the following command for each Helius PFA "user-defined material" that is used in the finite element model:
HELIUSPFA, argument1, argument2, . . .The HELIUSPFA command calls the Helius PFA macro. The arguments provided as part of the HELIUSPFA command are passed to the macro. The specific values available for the different arguments of the HELIUSPFA command (along with their formatting requirements) will be discussed later (Use ANSYS APDL to Create Input Files and Use a Text Editor to Convert ANSYS Input Files). For now, it suffices that you are aware the HELIUSPFA command is used to identify each composite material processed by Helius PFA. The HELIUSPFA command also identifies the specific form of multiscale constitutive relations used for each composite material.
For cohesive user materials defined with Helius PFA, ANSYS requires the use of the HELIUSCZ command.
HELIUSCZ, argument1, argument2, . . .The HELIUSCZ command calls the Helius PFA macro. The arguments provided as part of the HELIUSCZ command are passed to the macro. The specific values available for the different arguments of the HELIUSCZ command (along with their formatting requirements) will be discussed later (Use ANSYS APDL to Create Input Files and Use a Text Editor to Convert ANSYS Input Files). For now, it suffices that you are aware the HELIUSCZ command is used to identify each cohesive material processed by Helius PFA. The HELIUSCZ command also identifies the specific form of multiscale constitutive relations used for each composite material.