Mechanical APDL Structural Analysis Guide

For more information about this option, see the following

section(s) in the Structural Analysis Guide:

Option

Activate a predictor on the DOF

solution [PRED]

• Predictor-Corrector Option (p. 246)

Activate an advanced predictor

(STAOPT)

• VT Accelerator (p. 246)

Specify the maximum number of

iterations allowed per substep

[NEQIT]

• Maximum Number of Equilibrium Iterations (p. 246)

Specify whether you want to in-

clude creep calculation [RATE]

• Creep Material Model (p. 210)


• Creep Criteria (p. 249)

Set convergence criteria [CNVTOL] • Convergence Criteria (p. 245)

Control bisections [CUTCONTROL] • Cutback Criteria (p. 247)

2.2.2.6. Using the Advanced NL Tab

You can use the Advanced NL tab to set the options listed in Table 2.4: Advanced NL Tab Options (p. 13).
For specific information about using the Solution Controls dialog box to set these options, access the
dialog box, select the Advanced NL tab, and click the Help button.

Table 2.4: Advanced NL Tab Options

For more information about this option, see the following

section(s) in the Structural Analysis Guide:

Option

Specify analysis termination criter-

ia [NCNV]

• Maximum Number of Equilibrium Iterations (p. 246)

Control activation and termination

of the arc-length method

[ARCLEN,ARCTRM]

• Using the Arc-Length Method (p. 263)


• Loading in the Basic Analysis Guide

2.2.3. Set Additional Solution Options.

This section discusses additional options that you can set for the solution.These options do not appear
on the Solution Controls dialog box because they are used very infrequently, and their default settings
rarely need to be changed. ANSYS menu paths are provided in this section to help you access these
options for those cases in which you choose to override the ANSYS-assigned defaults.

Many of the options that appear in this section are nonlinear options, and are described further in
Nonlinear Structural Analysis (p. 193).

2.2.3.1. Stress Stiffening Effects

Most element types include stress stiffening effects automatically when NLGEOM is ON.To determine
whether an element includes stress stiffening, refer to the appropriate element description in the Element
Reference.

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Performing a Static Analysis