Frequency Response of Damped Structure

mesun_20785
mesun_20785 Altair Community Member
edited October 2020 in Community Q&A

Hi There;

 

ı would like to calculate complex eigen value of a beam like structure consist of viscoelastic material.

The modulus data and loss factor (g) values are frequency dependent.

 

Can anyone guide me how to perform complex eigen value analysis of damped structure?

 

The tutorial in hyperworks solvers gives an example for the stiffness related complex eigen solution

 

 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2015

    Hi Mesun,

    If I get you correctly.

     

    you can define frequency dependent Material data with MATF1 card

     

    OptiStruct > Reference Guide > Input Data > Bulk Data Section:

     

    And for complex Eigen Value calculation refer

     

    OS-1370: Complex Eigenvalue Analysis of a Reduced Brake System

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