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General Mechanical

General Mechanical

Topics related to Mechanical Enterprise, Motion, Additive Print and more.

Question about randomness of result

    • JooJaehoon
      Subscriber
      Hello!
       
      I'm conducting static analysis on plate
       
      I inflict 5.88 MPA clamping pressure using other plate indirectly
       
      I got equivalent stress distribution and I attached a picture, but, I have doubt about this result because of it's randomness.
       
      Should I use this result? or, how can I decrease randomness of result?
       
      Thank you.

       

  • peteroznewman
    Subscriber

    One way to smooth the contact pressure distribution is to change the default normal stiffness. 

    Ansys Contact Behaviours: Formulations - Mechead.com

    Change Normal Stiffness to Factor and use a value of 0.1 or 0.01 instead of the default value of 1.0 and change Update Stiffness to Every Iteration.

    Another thing you can do is use a finer mesh in the contact region. This is easily done using a Contact Mesh Sizing control.

    Take the free course on Contact Mechanics.

    • JooJaehoon
      Subscriber

      Hello ! Peter !

      Thank you for applying to my qustion.

      I'll try to modify stiffness term and check a result

      have a good day.

    • JooJaehoon
      Subscriber

      I solved problem!

      I'm glad to your advice!

    • JooJaehoon
      Subscriber

      I solved a problem!

      I'm glad to your advice!

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