Appendix A.10 - Arguments #11 & 12: Auxiliary Criterion Parameters

The Tsai-Wu and Hashin failure criterions require the specification of additional criterion parameters which are specified by arguments 11 and 12. Refer to the Theory Manual for a detailed description of each criterion and the auxiliary parameters.

• Argument 11 specifies a parameter for the Tsai-Wu and Hashin criterions. If Tsai-Wu is selected, this constant represents the cross product term, f*. If Hashin is selected, this constant represents the contribution of longitudinal shear stress to the fiber failure criterion, α.
• Argument 12 specifies a parameter for the Tsai-Wu criterion. In particular, this constant represents the optional equibiaxial stress at failure (σ11 and σ22 combined). This value can be left as zero if it is unknown.