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MDOF is an educational application built using OpenSees for looking at response of buildings to earthquakes. The software is available through the MDOF Tool website PileGroupTool is another educational application built using OpenSees for looking at response of pile groups in layered soil to lateral loading. The software is available through the PilGroupTool website Build-X, an expert system for reliable pre-and post-processing of buildings is now available for free download by the academic and research community. It is an efficient tool that utilises a wizard-like GUI to generate the tcl file and visualize the action effects of buildings under earthquake loading making expert decisions that facilitate the minimization of epistemic uncertainty. The software is available through the Build-X website The GiD+OpenSees Interface introduces a long-awaited graphical interface for OpenSees by seamlessly connecting its text-only solver to the user-friendly general graphical pre/post processor GiD. The interface is available though the the GID+OpenSees website The first Euopean conference on OpenSees will be held on June 19-20, 2017 at the Faculty of Engineering of the University of Porto, Porto, Portugal. For more information, please consult the conference web page. We have created a new Amazon Machine Image for those wishing to use the Amazon Cloud to do your analysis. This image conatins versions 2.5.0 of the sequential OpenSees application and the two parallel OpenSeesSP and OpenSeesMP applications. The image can be launched from the Amazon EC-2 Console or using starcluster. See here for details. We have updated the OpenSeesSP and OpenSeesMP applications on Stampede to version 2.5.0 for those wishing to do High Performance Paralllel Computing (HPC). These applications are available to XSEDE account holders on Stampede from the following directory: /home1/00477/tg457427/bin . In addition, for those registered on DesignSafe-ci, the applications are available through the Workspace. Version 2.5.0 of the OpenSees binary is now available for download. Here is the change log. We have made public an Amazon EC2 machine image that can be used to run Sequential and Parallel jobs on the cloud resources provided by Amazon EC2. With just 6 commands you could run your scripts remotely on a cluster of one to a few hundred nodes and all it would cost you is some of your free allocation or as little as $0.01 an hour per node. See here for details and here is a 5 minute video. We are conducting a survey to identify problems ans shortcoming associated with OpenSees. Please help by filling out the survey. NEES and PEER hosted this years two day event on September 25-26 at the Richmond field Station, UC Berkeley. The presentations are now available online and can be found here 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.

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 of OpenSees is sponsored by the Pacific Earthquake Engineering Research Center

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