In the Model Builder, click the
Solid Mechanics node. In the
Settings window, under
Structural Transient Behavior, select
Quasi static to treat the elastic behavior as quasi static (with no mass effects; that is, no second-order time derivatives for the displacement variables). Selecting this option gives a more efficient solution for problems where the variation in time is slow when compared to the natural frequencies of the system since no mass matrix will be created.
When Quasi static is selected on the physics interface
Settings window, the automatic solver suggestion changes the method for the
Time Stepping from
Generalized alpha to
BDF.
For a Fully Coupled node (or
Segregated node for multiphysics problems), the default
Nonlinear method under
Method and Termination is
Automatic (Newton). To get a faster computation time when the strain rate is low or moderate, select
Constant (Newton) as the
Nonlinear method instead.