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    Nonlinear Buckling Analysis after Pretensioning (Wrinkling Study – Patran/Nastran SOL 400)

    Hi everyone, I'm trying to replicate a wrinkling experiment on solar sails described by Wong and Pellegrino, originally performed in Abaqus. Their simulation procedure involves three main steps: A nonlinear static analysis to apply a pretensioning load. A nonlinear buckling analysis to obtain...
  2. N

    Patran/Nastran Buckling Analysis – SYSTEM FATAL MESSAGE 7340 (LNNHERR)

    Hi everyone, I'm currently working on a buckling analysis using Patran/Nastran on a thin Kapton structure (as part of a solar sail concept). The workflow involves applying prestress through a linear static subcase first, followed by a buckling step to capture possible wrinkling modes. However...

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