A nonlinear static analysis is required for any static application in which the stiffness of the entire structure changes during the loading scenario. The simulation must be solved incrementally to account for the stiffness changes.

What is a non-linear static analysis?

Nonlinear static analysis, commonly referred to as pushover analysis, is a method for determining the ultimate load and deflection capability of a structure.

Which of the following is commonly used software for nonlinear analysis of structure?

Industry Professionals responded that they primarily used SAP/ETABS, followed by PERFORM-3D and STAADPro which are 3-D structural analysis programs commonly used by structural engineers, especially for nonlinear analysis and performance assessment.