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General Mechanical

General Mechanical

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

Real Life Example of a non-symmetric eigenvalue problem

    • Dennis Chen
      Subscriber

      Hello, are there really simple example model of a unsymmetric modal analysis that must be solved (suposedly) with the MODOPT, UNSYM command in ansys mechanical?

      I like to build a very simple example demonstrating this capability in Ansys Mechanical and I like to know if there's a simple real life example I can use. 

    • Erik Kostson
      Ansys Employee

       

      Hi 

       

      Please see this example in help (brake squeal – unsym, modal). As a side no need for commands in modal analysis set.:
      In the Analysis Settings, set the Solver type to Unsymmetric (as mentioned in the below example)

      https://ansyshelp.ansys.com/public/account/secured?returnurl=/Views/Secured/corp/v252/en/wb_wbtec/WBtecbrakeSolution.html

      We also have it as a course/tutorial:

      https://innovationspace.ansys.com/courses/courses/understanding-simulations-through-examples-part-2/lessons/break-squeal-analysis-lesson-1/

      All the best

      Erik

       

       

    • Dennis Chen
      Subscriber

      Erik, Thank you!   I saw the same example in LS-Dyna too!. 

      • Erik Kostson
        Ansys Employee

        That is great - I have not seen that one (LS-Dyna) - many thanks,

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