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  1. INVAS

    Principal stress in plastic region

    Good Morning, I run a 3D non-linear analysis in Nastan using SOL106. The volume is modeled with CTETRA elements while CTRIA3 exist on skin. Part is loaded in traction. Material used is a steel for which an elasto-plastic curve - like the one shown here below - is used: Further, MAT1 and MAST1...

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