NON-LINEAR BEHAVIOUR OF SHELLS

JJJJJJ
Hello collages. I have done a simple test, where I have modeled a square hollow section 100x3, submited to a uniformally load on the top. I have checked results of this 2m simple beam with classical formulas, and the results of the internal solver of Mecway are very close. Calculix, I think because the methodology to expand from shells to solid, has more than 60% diference.
Is there intention to develop nonlinear capabilities for the internal solver? I want to evaluate stainless steel material analysis, for example, or non-linear buckling of shells.

Thank you for your time.

JJ

Comments

  • VictorVictor
    Hello JJJ

    Nonlinear shells for the internal solver are not a priority, sorry.

    I'm surprised at that 60% error. You might need more refinement with the CCX shells. Also make sure the mesh is quad-dominant, not linear triangles.

    You can also use the OpenRadioss solver which has more traditional nonlinear shells. Use damping to obtain a static solution.
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