OPENSEES

The Open System for Earthquake Engineering Simulation (OpenSees) is a software framework for simulating the seismic response of structural and geotechnical systems. OpenSees has been developed as the computational platform for research in performance-based earthquake engineering at the Pacific Earthquake Engineering Research Center... OpenSees is a software framework for developing applications to simulate the performance of structural and geotechnical systems subjected to earthquakes. A number of OpenSees applications are released on this website. Here is a short video... Nonlinear analysis requires a wide range of algorithms and solution methods. OpenSees provides nonlinear static and dynamic methods, equation solvers, and methods for handling constraints.