PARAM, OPSTS

Bulk Data Entry Used to define how the stress and strain of plane stress elements (CQPSTS and CTPSTS) are output to H3D.

Definitions

Parameter Values Description
OPSTS <NEW, OLD>
NEW (Default)
The stress and strain of plane stress elements (CQPSTS and CTPSTS) are output to H3D in the material coordinate system.
OLD
The stress and strain of plane stress elements (CQPSTS and CTPSTS) are output to H3D in the elemental coordinate system.

Comments

  1. The parameter changes the stress and strain output only for plane stress elements (CQPSTS and CTPSTS).
  2. When PARAM,OPSTS,NEW is set, PARAM,OMID must be set to YES. If PARAM,OMID,NO coexists with PARAM,OPSTS,NEW, PARAM,OMID,NO is automatically changed to PARAM,OMID,YES.
  3. Currently, PARAM,OPSTS,NEW only supports the DIRECT result type of stress and strain output. If TENSOR result type of stress and strain is requested, it is automatically changed to DIRECT.
  4. If a model does not contain any plane stress element, PARAM,OPSTS,NEW is ignored and OptiStruct follows whatever you have set for stress/strain result type, no matter if it is TENSOR or DIRECT.