Ansys Learning Forum › Forums › Discuss Simulation › LS Dyna › *MAT_058 / *MAT_LAMINATED_COMPOSITE_FABRIC – Stress Strain curves in WB › Reply To: *MAT_058 / *MAT_LAMINATED_COMPOSITE_FABRIC – Stress Strain curves in WB
Hello,
I don't think it is possible in engineering data. You can define *MAT_058 in engineering data:
But, if you define negative values for Ea, Eb, and Ec for example, Workbench will expect real values and will apply the units to it so that in the input.k file, -1 becomes -1E-6, -2 becomes -2E-6, and -3 becomes -3E-6. And so it does not work.
The best way to do this would be to use a command snippet in Mechanical and define the *MAT_058 card this way:
The negative value for Ea, Eb, and Ec correspond to a load curve for the stress vs strain. You can define the load curves (*DEFINE_CURVE) using a command snippet at the environment level:
Let me know if this helps or not.
Reno.