PARAM, OPTI

Bulk Data Entry This parameter can be used to activate the new OPTI format, which is enhanced with labels for improved readability.

Definitions

Parameter Values Description
OPTI <NEW, OLD>
NEW
Activates the new OPTI format.
OLD (Default)
Activates the old OPTI format.

Comments

  1. The older/existing OPTI format is still available, and the new format is an addition, only for certain analysis types and output requests.
  2. The following is a comparison of the old and new OPTI formats using ELFORCE (.force) as an example, which has improved readability.


    Figure 1.
  3. Following is a summary of results and analysis types for which the new OPTI format is supported.
    • Node based results
      Result Type Analysis Types
      DISPLACEMENT Linear Static, Normal modes, Linear buckling analysis.
      DISPLACEMENT Frequency response analysis (Direct and Modal) in REAL/IMAG or MAG/PHASE formats.
      VELOCITY
      ACCELERATION
      SPCFORCE Linear Static, Frequency response analysis (Direct and Modal) *.
      MPCFORCE
    • Element based results
      Elements Linear Static Analysis Normal Modes Analysis Frequency Response Analysis (Direct and Modal) Response Spectrum Analysis
      CELAS1, CELAS2 ELFORCE, STRESS, STRAIN ELFORCE, STRESS, STRAIN ELFORCE, STRESS, STRAIN STRESS, STRAIN
      CROD
      CBAR
      CWELD STRESS, STRAIN
      CGAP ELFORCE, STRESS, STRAIN
      CSHEAR
      CFAST
      CBUSH
      Shells (CTRIA3, CTRIA6, CQUAD4, CQUAD8)
      Solids (CHEXA, CPENTA, CTETRA, CPYRA) STRESS, STRAIN STRESS, STRAIN STRESS, STRAIN
      Axisymmetric Elements (CTAXI3, CTAXI4, CQAXI4, CQAXI8)
      Plane Strain Elements (CTPSTN3, CTPSTN6, CQPSTN4, CQPSTN8)