Nonlinear Analysis Parameters dialog

Use this dialog to define the non-linear analysis parameters.

Access

Click Analysis Analysis Types Select a case, and then click Parameters.

Nonlinear Analysis Parameters

Auxiliary case

Ignores the selected case during the calculations.

Geometric Non-linearity

These analysis parameters can improve the convergence of the calculation process because they consider the actual higher-order effects. This is especially useful when working with a structure which includes non-linear elements.

P-Delta - takes into account second-order effects, such as the change of bending rigidity depending on the longitudinal forces.
Large displacements - takes into account third-order effects, such as the additional lateral rigidity and stresses resulting from deformation.