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  1. fabio84

    Principal stresses at surface nodes

    Dear all, I am a new user of forum. In my job I use Nastran/Patran. I noticed that FEM analysis leads to incorrect values ​​of the principal stresses at nodes of a surface. For example, suppose you have a meshed volume consists of HEXA elements (8 nodes). Well, Nastran calculates value of stress...

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