General Mechanical

General Mechanical

Response spectrum and seismic transfer function

    • AR
      Subscriber

      Hello,

      I need to obtain the seismic transfer function for a seismic event but I don't know how. Does anyone know how to do it?

      In the image below you can see a graph that shows the entered spectrum (black line). The other lines are the behavior, that is, the response of some nodes of interest to the entered spectrum. However, I don't know what kind of analysis I can perform to get these values. Does anyone know how to do it?

       

      Regards,

    • peteroznewman
      Subscriber

      In Workbench, create a Modal analysis and use Fixed Supports for the connection of the structure to ground.

      Then drag a Response Spectrum analysis and drop it on the Solution cell of the Modal analysis. You can then use the Input Spectrum in this analysis as a Base Excitation.

      Take some courses to learn Modal Analysis and other Dynamic Analyses such as Response Spectrum.

      https://courses.ansys.com/index.php/courses/modal-analysis-in-ansys-mechanical/

      https://courses.ansys.com/index.php/courses/single-point-response-spectrum-analysis-using-ansys-mechanical/

    • AR
      Subscriber

      Hello Peter,

      I have already done a modal analysis together with a response spectrum. However, with that I can't get acceleration results for each frequency. 

       

      I have thought about performing a harmonic analysis but with it I cannot insert a seismic spectrum.

       

      Do you know any other way to do it to get the graph or the values to perform the graph from the previous post?

       

      Regards

    • peteroznewman
      Subscriber

      See my answer in your other thread.

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