General Mechanical

General Mechanical

How to simulate a support with different stiffness.

    • Gordievsky87
      Subscriber

      I have an electric motor and it shows various bearing vibrations on different foundations (in reality). The reason for such behaviour is the different stiffness of foundations. I want to figure out the stiffness values of these foundations by selecting different stiffness values in the mechanical.

      I perform modal analysis and set the fixed support on the bottom of the motor. Then I get the natural frequencies of the motor on the max rigid foundation.

    • 1shan
      Ansys Employee
      ,nHave you tried using an elastic support? RMB>Modal>elastic support (refer Elastic Support (ansys.com)). If you want to include tangential stiffness as well you can use a bonded contact with command snippets. Check this out https://mechanicsandmachines.com/?p=258.nnnRegards,nIshan. nhttps://forum.ansys.com/discussion/3978/how-to-access-the-ansys-online-helpn
    • Gordievsky87
      Subscriber
      Ishan, thank you. nI have used elastic support but it led to error too. n
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