This option is used to specify the quasi-Newton method instead of the standard Newton method for solving nonlinear equations, to specify a separated solution scheme for *COUPLED TEMPERATURE-DISPLACEMENT and *COUPLED THERMAL-ELECTRICAL procedures, or to specify that contact iterations should be executed instead of regular severe discontinuity iterations.
Product: ABAQUS/Standard
Type: History data
Level: Step
“Fully coupled thermal-stress analysis,” Section 6.5.4 of the ABAQUS Analysis User's Manual
“Coupled thermal-electrical analysis,” Section 6.6.2 of the ABAQUS Analysis User's Manual
“Contact iterations,” Section 8.2.2 of the ABAQUS Analysis User's Manual
“Convergence criteria for nonlinear problems,” Section 8.3.3 of the ABAQUS Analysis User's Manual
Set TYPE=QUASI-NEWTON to specify a quasi-Newton solution method.
Set TYPE=SEPARATED to specify that linearized equations for the individual fields in a fully coupled procedure are to be decoupled and solved separately for each field. This option can be specified only with the *COUPLED TEMPERATURE-DISPLACEMENT and *COUPLED THERMAL-ELECTRICAL procedures.
Set TYPE=CONTACT ITERATIONS to specify that contact iterations should be executed instead of regular severe discontinuity iterations.
This parameter can be used only with TYPE=QUASI-NEWTON. Set this parameter equal to the number of quasi-Newton iterations allowed before the kernel matrix is reformed. The default is REFORM KERNEL=8.
First (and only) line:
Correction factor on the maximum number of right-hand-side solutions during any contact iteration. The default is 1. The actual number of allowed right-hand-side solutions with the correction factor accounted for is printed in the message file if *PRINT, CONTACT=YES is specified.
Maximum number of contact iterations allowed before new global matrix assemblage and factorization. The default is 30.