OptiStruct – Nonlinear Axisymmetric Analysis

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Nonlinear axisymmetric analysis with OptiStruct.


Product: OptiStruct
Product Version: OptiStruct 2019.0 or above

Topic Objective
Nonlinear axisymmetric analysis with OptiStruct.

Topic Detail
Analyzing a symmetrical portion of a structure means faster processing than if you modeled the whole structure.Axisymmetric CTAXI with 3 and 6 node tria-elements, where always available for linear analysis. From 2019.0 we support axisymmetric quad-elements with 4 or 8 nodes.

Axisymmetric Elements
Axisymmetric are available for tria & quad elements for both
  • 1st order
  • 2nd order

    For linear analysis, & nonlinear static analysis
    • Small displacement
    • Large displacement


    Contact support for Axisymmetric elements (Supported from V 2019.1)
    • N2S and S2S CONTACT and TIE are supported for axisymmetric modeling.
    • Currently, contact for axisymmetry is supported only for small sliding.
    • The Contact Smoothing option is also not supported.


    Axisymmetric are not supported yet for:
    • Inertia relief analysis in LGDISP nonlinear analysis
    • Hyper-elastic materials
    • Optimization with non-linear






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