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Structural Dynamics

Structural Dynamics

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  3. Can I define mode-dependent damping ratio in Harmonic analysis?

Can I define mode-dependent damping ratio in Harmonic analysis?

Tagged: harmonic-analysis, Mode dependent Damping Ratio
    • June 6, 2022 at 9:58 am
      FAQFAQ
      Participant

      For full harmonic analysis, one can not define damping ratios as a function of mode. For mode-superposition Harmonic analysis, one can define mode dependent damping ratio with the “MDAMP” command. For example, to set the critical damping ratio for the first mode to 0.05 and for the second mode to 0.02, insert a command:
      MDAMP, 1, 0.05, 0.02

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