General Mechanical

General Mechanical

Eigenfrequencies in wrong order after modal analysis

    • julius.langenhorst
      Subscriber

      Hello,

      I'm doing a modal analysis in Mechanical APDL 2022 R1 on a damped structure using the DAMP solver. When I have high damping it happens that some frequencies are in the wrong order, e.g.,  211194 Hz being right before 209142 Hz.

      Aren't frequencies always output in ascending order? Is that even a problem or can I just put them in the correct order during post-processing?

      Thank you.

    • peteroznewman
      Subscriber

      There is more than one way to sort the results of a damped modal analysis. There is no problem here, you can sort the results by Frequency.

    • julius.langenhorst
      Subscriber

      Thank you very much for your answer!

Viewing 2 reply threads
  • You must be logged in to reply to this topic.