3D Composite Analysis
Altair Employee Hi!
I am working on a 3D composite analysis, and I have some weird phenomena in my results. The analysis overall seems to match the 2D case, except the first ply. On the screenshots a few elements can be seen that have an outlying stress and strain. The cylinder is symmetric, and the appropriate constraints have been used for symmetry, and a PLOAD4 have been applied for pressure. The material direction is 88 degrees in that ply. Do you have any explanation or experience with the issue?
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I fount the problem. When MAT9ORT is defined for material, all directions of G and NU has to be filled in.