Static 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.

Static Analysis Parameters

Auxiliary case

Ignores the selected case during the calculations.

Geometric Non-linearity

Geometric nonlinearity enforces a nonlinear solution even for a linearly elastic model. This is especially useful when large loads are applied to nodes with significant lateral displacements, or more rarely when large displacements or rotations occur.

You can select the following options:

P-Delta takes into account second-order effects such as the change of bending rigidity depending on the longitudinal forces, and the influence of the structure deformation on the final equilibrium state.
Large displacements takes into account second-order and third-order effects such as the additional lateral rigidity resulting from deformation, and the influence of bending on the element elongation.