View details of each user-material constant for composite materials.
A set of user material constants are provided in the data line that immediately follows the *USER MATERIAL keyword statement. The Simulation Composite Analysis User-Defined Material Subroutine uses these constants to determine the precise form of multiscale constitutive relations that should be used for the composite material. For any type of composite material, the number of user material constants must be between 3 and 18. The table below provides a short description of the feature controlled by each user material constant along with the allowable range of values for each constant.
User Material Constants for Composite Materials
The remainder of Appendix A discusses each material constant in detail, including the impact of the constant on the multiscale constitutive relations used to represent the composite material.