Load Case Data - Nonlinear Static Form

Use the Load Case Data - Nonlinear Static form to view and change the definition of a nonlinear static load case. To display that form, click the Analysis > Type > Static > New > Analysis Type - Nonlinear command.

A direct-integration time-history analysis solves equations for the entire structure at each time step, as compared with a modal time-history analysis, which uses the method of mode superposition. Nonlinear static analysis can be used for many purposes:

Use the following areas on the form to define the nonlinear direct-integration time-history load case.

Tip: Although not required, it makes the most physical sense for the selected modal load case to be based on the stiffness matrix from the same nonlinear load case (or zero) that is used for the initial conditions of the current nonlinear static load case.

Note: For modal loads, if a mode number is chosen that was not calculated in the specified Modal Load Case (see bullet item above), a warning will be issued and the applied load will be zero.

See Also

Load Case Data

Define Load Cases