General Mechanical

General Mechanical

Modal analysis change in frequency wrt material

    • shrav007
      Subscriber
      I'm doing a modal analysis of a structure. I have three materials i.e. Structural Steel, Magnesium Alloy, Aluminium Alloy. These materials are in Ansys Database.

      I am changing the material for the same Boundary conditions and structure with refined mesh. I am getting the modal frequencies of
      Structural Steel > Aluminium Alloy > Magnesium Alloy.

      Isn't it supposed to be the other way MA>AA>SS as per the formula natural frequency = sqrt(k/m) ?
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