Introduction - If you have any usage issues, please Google them yourself
The latest version of Opensees,based on tcl language.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 thePacific Earthquake Engineering Research Center. OpenSees is also the simulation component for the NEESit since 2004.