Normal Modes Analysis

Altair Forum User
Altair Forum User
Altair Employee
edited November 2020 in Community Q&A

Hello,

 

I submit a modal analysis study in which the frequencies of values are close to the analytical but the vibration modes seem wrong, could tell me where I am going wrong? What exactly is Eigen Mode?

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2016

    Hi Ariane,

     

    I cant run your model since it is not compatible with HM I am using. 

     

    What makes you think the mode shapes are wrong?

     

    Eigen modes are the mode shapes.

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited July 2016

    Which mode you think is wrong?Since you are using 1D element there is a chance that you may not get smoother mode shape.Try more no of elements in between constraints or try with smaller element size with 2d elements.

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