General Mechanical

General Mechanical

Topics relate to Mechanical Enterprise, Motion, Additive Print and more

Frequency Based Fatigue Analysis

    • Louie Lou


      I have a model which has g/Hz and g^2/Hz data in 2000 Hz. 

      I found natural frequencies in 2000 Hz in Modal analysis. After that should I do harmonic analysis? I have already g/Hz datas, however nCode DesignLife does not accept modal analysis. It just accepts FRF. 

      What should my workflow be? Please can you help me? 

    • Erik Kostson
      Ansys Employee


      This video shows you how to do what you want.

      All the best


      • Louie Lou

        Thank you sir, I watched the video, but I confused. When I put acceleration in the harmonic analysis, is it should be 9800 mm/s^2? 

        In addition, I have PSD data which is in X-Y-Z direction. I created 3 harmonic analysis. Should I enter 9800 mm/s^2 as the acceleration for all X-Y-Z directions?

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