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  1. hs2011

    extract Matrices from SOL 103

    Hi everyone, I need help 1) punch damping matrix 2) For Ground Vibration Test, I need to apply excitation force to the wing. How to model excitation force in Patran/Nastran? 3) how to get Mass matrix from modal analysis, I can get unit mass matrix, I need a mass for each mode for given plate...
  2. hs2011

    extracting Matrices from Nastran Modal analysis

    Hi everyone, I need help 1) punch damping matrix 2) For Ground Vibration Test, I need to apply excitation force to the wing. How to model excitation force in Patran/Nastran? 3) how to get Mass matrix from modal analysis, I can get unit mass matrix, I need a mass for each mode for given plate...
  3. hs2011

    SOL 145 considering PreLoads

    Hi Friends, I have to do SOL 145 with preloads. I have to considere preload for linear and nonlinear deformation of strucutre into consideration for flutter analysis. Is anybody done this earlier? Pl. help me, thanks in advance

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