PEER and NEES will be hosting an OpenSees User Workshop on August 27th and an OpenSees Developer Workshop on August 28th. Information and Registration for both is available online Welcome to the website for OpenSees, a software framework for developing applications to simulate the performance of structural and geotechnical systems subjected to earthquakes.

The goal of the OpenSees development is to improve the modeling and computational simulation in earthquake engineering through open-source development.

OpenSees is under continual development, so users and developers should expect changes and updates on a regular basis. In this sense, all users are developers so it is important to register. More information on Open Source is available.

The development and application of OpenSees is sponsored by the Pacific Earthquake Engineering Research Center through the National Science Foundation engineering and education centers program.

OpenSees has been selected as the simulation component for the George E. Brown, Jr. Network for Earthquake Engineering Simulation and has being sponsored by NEESit since 2004. Ongoing work to integrate OpenSees into the NEESit framework includes a web-based portal for simulation services, access to the NEESit data repository, and a visualization tool.

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For information about new releases we encourage you to register with us at the OpenSees Registration Center.