Hello,
I am doing a research using Abaqus/CAE. My case is observing fiber-reinforced composite behavior in low-velocity impact.
I am using cohesive element in the interfaces between each composite lamina. The cohesive element has some mechanical properties like elastic-traction, density and a damage criterion.
I want to write a subroutine of damage criterion based on the nominal traction stress vector, t, which consist of 3 component tn-component normal and ts, tt - 2 shear components.
Could anyone provide me some examples for this type of subroutine?
Thank you in advance.
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