PARAM, EXPISOP

Bulk Data Entry This parameter controls the element integration scheme in Explicit Dynamic Analysis.

Parameter Values Description
EXPISOP <FULL, URI, AURI, SRI>

Default = AURI for eight-noded CHEXA elements in dynamic analysis.
FULL
Full integration for eight-noded CHEXA elements. The element formulation is based on incompatible mode with fixed 2×2×2 Gauss integration points and shear locking-free.
URI
Uniform reduced integration for eight-noded CHEXA elements. One-point integration is used.
AURI
Average uniform reduced integration for eight-noded CHEXA elements. B matrix is a volume average over the element.
SRI
Selective reduced integration for eight-noded CHEXA and six-noded CPENTA elements. Full integration for deviatoric term and one-point integration for bulk term.

Comments

  1. ISOPE on PSOLID, PLSOLID will overwrite any values defined by PARAM,EXPISOP.
  2. PARAM,EXPISOP is not applicable to Shell elements.
  3. This parameter is applicable only for Explicit Dynamic Analysis.