A plane cantilever column is shaken by an earthquake. Material nonlinearity is accounted for using the force formulation and fiber-discretized cross sections

Integration of an inelastic single-degree-of-freedom (SDOF) system.

Corotational frame elements are used to approximate Euler's buckling load.

This example demonstrates how to perform eigenvalue analysis and plot mode shapes.

This code computes the RotD50 Sa and RotD100 Sa Spectra of bi-directional ground motion records. spectra.py The source code for this problem is adapted from the example by Jawad Fayaz at https://openseespydoc.readthedocs.io/en/latest/src/exampleRotDSpectra.html .

Basic sensitivity analysis is performed