General Mechanical

General Mechanical

Forced vibration analysis & geometry has non linear material

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    • tumulpurwar
      Subscriber

      I want do forced vibration analysis but twist is geometry uses non linear material. 

      Is it possible to do in ansys? 

    • peteroznewman
      Subscriber

      Transient Structural can simulate the time-history of vibration including all nonlinear effects, but it will take a long time and a lot of disk space to solve.

      I recommend starting with a model that uses only linear materials and build a Modal analysis, then drag and drop a Harmonic Response analysis onto the Solution cell of Modal to setup a Mode Superposition (MSUP) Harmonic Response analysis. The benefit of this analysis is it solves very fast.

      Once you have completed the analysis with linear materials, duplicate the model, convert it to a Transient Structural and add the material nonlinearity to perform the time-history analysis.

    • Erik Kostson
      Ansys Employee

       

      See our courses in linear  dynamics (harmonic and modal – e.g., https://courses.ansys.com/index.php/courses/harmonic-response-analysis-in-ansys-mechanical/)

       

      As these are linear type of analysis, they can not account for nonlinear material.

       

      The structural transient dynamic system can account for nonlinearities (e.g., material) – see our courses and search the internet for examples on transient dynamics (also the help manual has some examples in MAPDL).

      All the best

      Erik

       

    • tumulpurwar
      Subscriber
      Thankyou peter & Erik
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