E5084

E5084 WARNING: E5084 USING PREVIOUSLY CONVERGED STIFFNESS MATRIX FOR THIS UPDATE
Cause: A singular or non-positive definite tangent stiffness was detected and reset in a nonlinear static solution with the NLNPDKRESET model parameter set to ON.
Action: The stiffness matrix will be automatically reset to the last converged tangent stiffness matrix. If a fatal error results, try one of the following:
  • Increase the number of load increments specified in field 3 of the NLPARM Bulk Data entry or divide the loading using several subcases.
  • Reduce the applied loading.
  • Investigate any nonlinear material properties (nonlinear elastic, thermo-elastic, elastic-plastic) that are specified.
Remarks: None.