General Mechanical

General Mechanical

Damped modal analysis in ANSYS APDL

    • sbiscans
      Subscriber

      Hello,


      I've created a simple 3D model of a mass spring system in ANSYS APDL. When I run a modal analysis to evaluate the main resonance frequency, it matches well with theory. However, as soon as I add damping in my material properties, the damped frequency results don't make sense anymore. I've tried different modal method and parameters (following the ANSYS help) to define damping with no success. See results and more explanation in the attached PDF.


      At this point I don't know how to move forward. Please let me know if something is wrong with my method or if I'm missing something.


       


      Thank you


       

    • Aniket
      Ansys Employee

      Ansys staff can not download attachments on the student portal, so if you want to reach a larger audience to get answers from, please insert the images inline to explain the problem in some more details.


      -Aniket


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