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  3. From the command help about D, the enforced motion and residual vector cannot be used together in a modal analysis. Is this true?

From the command help about D, the enforced motion and residual vector cannot be used together in a modal analysis. Is this true?

Tagged: 19.2, General, mechanical-apdl, structural-dynamics, structural-mechanics
    • April 5, 2023 at 2:33 pm
      FAQFAQ
      Participant

      From the help, “D,,,SUPPORT” is needed only when rigid body modes are present because we need to apply pseudo-constraint to compute residual vector. The model is constrained when the enforced base identifier is applied otherwise. Enforced motion and residual vector are supported in a modal analysis.

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