PARAM, RENUMOK

Bulk Data Entry Allows you to correctly renumber the reversed (but acceptable) sequence of element grids without having to run (import and re-export) the model through HyperMesh.

Parameter Values Description
RENUMOK <YES, NO, BLANK>
YES (Default)
When the solid element grids are listed in the order that would make the element inside out, they are automatically re-ordered. In this way, running (importing and exporting) the model through HyperMesh to get the corrected element grid sequence can be avoided.
NO
When the element grids are input in reverse order, they are not re-sequenced to the correct order. OptiStruct will error out if such element grid ordering exists.
BLANK
When the solid element grids are listed in the order that would make the element inside out, they are automatically re-ordered. In this way, running (importing and exporting) the model through HyperMesh to get the corrected element grid sequence can be avoided.

Comments

  1. If the element grids are input in a random order, PARAM, RENUMOK will not be able to correct the sequence. OptiStruct will error out in such cases.
  2. If PARAM,RENUMOK is used and the .fem file is used for the model information file in HyperView, then corner stresses for the solid elements will be wrong when the .h3d or .op2 files are used for the results file. So, if PARAM,RENUMOK is used, HyperView should use the .op2 or .h3d file for the model information file.
  3. If the elements look as expected when the input deck is imported into HyperMesh or HyperView, then RENUMOK should help. However, in all other cases, especially whenever the elements look like the opposite edges cross (resembling bow-tie configuration), RENUMOK will not help.