Version 2.4.3 of the OpenSees binary is now available for download. Here is the change log. The next seminars in the web-based Discovering OpenSees: Surfing the waves of OpenSees learning series will occur February 28 and March 27. The webinar on February 28 is titled: Advanced Scripting Techniques and Tips. The Webinar on March 27 is titled: Basic Reliability Analysis With OpenSees. OpenSees is now available for use to all on NEEShub through the OpenSeesLab tool. For those of you with large models or many runs to perform, the machines on which this tool runs is very very very fast.

I have posted a YouTube video showing how to perform an OpenSees simulation using this tool. An improved version will be available soon. The OpenSees GUI applications, BuildingTcl and OS Navigator, are also available to run.

Try them out, registration and use of the machines are free!

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 is being sponsored by NEEScomm . NEEScomm provides support for the ongoing maintenace of OpenSees and support to integrate OpenSees with the IT and EOT resources that NEEScomm makes available to the earthquake engineering community.

More info...