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Modeling & Meshing

Modeling & Meshing

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  3. Why can a cyclic symmetry analysis issue many warning messages of the following type? “Term= 3 on CE number= 17 is not active on any element. This CE is ignored.”

Why can a cyclic symmetry analysis issue many warning messages of the following type? “Term= 3 on CE number= 17 is not active on any element. This CE is ignored.”

Tagged: 8.1, beams-and-shells, mapdl, Mechanical APDL (f. ANSYS), modeling-and-meshing, Modelling and meshing, structural-mechanics
    • March 17, 2023 at 9:00 am
      FAQFAQ
      Participant

      One possible cause is that the edge nodes are attached to elements with only a translation dofs, but there are elements in the model (e.g., beam or shell) with translation and rotational dofs. If so, the solver will write cyclic symmetry constraint equations for non-existent rotational dofs. This problem can be alleviated by using the CYCOPT command to specify the dofs to be used. For example: CYCOPT,DOF,1,UX,UY,UZ ! For pair 1 CYCOPT,DOF,2,UX,UY,UZ ! For pair 2

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