3D Composite Analysis

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

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?

<?xml version="1.0" encoding="UTF-8"?>stress.JPG

<?xml version="1.0" encoding="UTF-8"?>strain.JPG

Tagged:

Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2018

    I fount the problem. When MAT9ORT is defined for material, all directions of G and NU has to be filled in. 

Categories