Solving nonlinear problems

Solving nonlinear problems in Abaqus/Standard involves:

  • a combination of incremental and iterative procedures;

  • using the Newton method to solve the nonlinear equations;

  • determining convergence;

  • defining loads as a function of time; and

  • choosing suitable time increments automatically.

Alternative techniques to the standard Newton method are available. Some static problems may become unstable because of severe nonlinearity. Abaqus/Standard offers a set of automatic stabilization mechanisms to handle such problems.

The following topics are discussed:

Related Topics
About convergence and time integration criteria
Commonly used control parameters
Convergence criteria for nonlinear problems
Time integration accuracy in transient problems
In Other Guides
Configuring general analysis procedures