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  • Users: Mat_Aero
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  1. Mat_Aero

    Question - identification of critical modes

    Hello everyone, I have a question regarding modal / harmonic analysis. Is there any general rule or recommendation to determine which modal shapes can be critical for structure from stress point of view? I know that partially this information can be determined from modal effective...
  2. Mat_Aero

    Question - Identification of critical modal freq.

    Hello everyone, I have a question regarding modal / harmonic analysis. Is there any general rule or recommendation to determine which modal shapes can be critical for structure from stress point of view? I know that partially this information can be determined from modal effective...
  3. Mat_Aero

    Modal Analysis - modal matrices export

    Hello. I have question regarding the NX Nastran modal analysis. I am working on project which takes Nastran results from modal analysis for further post processing/computation. However, the values which I am interested in are modal mass matrix(Mhh), modal matrix(Phi) and matrix of...
  4. Mat_Aero

    Femap 6060.Laminate Max. Failure Index calculation

    Hello everyone, I have a question regarding the 6060. Laminate Max. failure Index computation in Femap. I’ve created basic 2D model of rectangular CFRP plate(M55J prepreg) with layup [(0/+-25/0)2/0]s. I’ve applied tensile load on one end and fixed constraint on the other and performed the...
  5. Mat_Aero

    Adhesively bonded joint analysis

    Hello. I have question regarding modeling and analysis of the bonded joint for thermoelastic load case. The bonded joint consists of CFRP tube from T700 prepreg and Titanium tube which are bonded together by epoxy adhesive, see attached figure. The CFRP tube is modeled with shell elements while...

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