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How to impose failure in the given fail stress of a composite layup.

How to impose failure in the given fail stress of a composite layup.

How to impose failure in the given fail stress of a composite layup.

(OP)
dear all,
i want know if any one have an idea how to solve this problem.
I have represent a composite plate with ten plys and I have choose the Lamina like type of material for this composite, then I entered the parameters of this material (E1, E2, G12, G23, G13 and ν12) and the fail stress (ten stress fiber dir, com stress fiber dir, ten stress trans dir, com stress trans dir). and when I increase the load I did not have fracture of the materiel.  Some is the loading given, the material behavior is elastic, I want to have idea how to impose the fracture on the  given fail stress. I think that I must use the Tsail-Hill failure criterion.
facts of the case:
* Part: 3D, solid, deformable
* Materiel: elastic, Lamina with fail stress.
* Composite-layup: 10 plys, continuum shell(0,90,0,+45,-45)s
                   0.13 mm as a thikness.
* Mesh: element: Hex, sweep.
        element type : standard, linear, continuum shell (SC8R).
* Load: exceeding the tensile stress fiber direction value.

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