An analysis case is a template (a set of objects sets) for defining environmental actions on a given system. A Nonlinear Structural Analysis case consists of a Simulation History, which can contain one or more steps. Each step represents a period of time in the simulation history and is associated with a specific analysis procedure. In the Nonlinear Structural Analysis workbench you can define the following types of steps:

Inserting a New General Static Step: Generates a General Static step in a Nonlinear Structural case. A General Static step is included by default when you create a Nonlinear Structural case.

Inserting a New Static Linear Perturbation Step: Generates a Static Linear Perturbation step in a Nonlinear Structural case.

Inserting a New Frequency Step: Generates a Frequency step in a Nonlinear Structural case.

Inserting a Mode-based Steady-State Dynamics Step: Generates a Mode-based Steady State Dynamics step in a Nonlinear Structural case.

Inserting a Subspace-based Steady-State Dynamics Step: Generates a Subspace-based Steady State Dynamics step in a Nonlinear Structural case.

Inserting a New Riks Step: Generates a Riks step in a Nonlinear Structural case.

Inserting a New Explicit Dynamics Step: Generates an Explicit Dynamics step in an Explicit Dynamics case. An Explicit Dynamics step is included by default when you create an Explicit Dynamics case.