OpenSees

OpenSees (the Open System for Earthquake Engineering Simulation) is an object-oriented software framework created during the National Science Foundation-sponsored era (1997-2007) of the Pacific Earthquake Engineering Research (PEER) Center. OpenSees allows users to create finite element applications for simulating the response of structural and geotechnical systems subjected to earthquakes. This framework was developed by Frank McKenna and Gregory L. Fenves with significant contributions from Michael H. Scott, Terje Haukaas, Armen Der Kiureghian, Remo M. de Souza, Filip C. Filippou, Silvia Mazzoni, and Boris Jeremic. OpenSees is primarily written in C++ and uses several Fortran numerical libraries for linear equation solving.

Main article: Earthquake engineering
Repositorygithub.com/OpenSees/OpenSees/
Written inC++
Operating systemLinux, Windows and Unix-like
Licensehttp://opensees.berkeley.edu/OpenSees/copyright.php
Websiteopensees.berkeley.edu

Licensing

The license permits use, reproduction, modification, and distribution by educational, research, and non-profit entities for non-commercial purposes only. Use, reproduction, and modification by other entities is allowed for internal purposes only. The UC Regents hold the copyright for OpenSees to be used in commercial distribution.[1]

Usage

Users of OpenSees create applications by writing scripts in either the Tcl or Python programming language.

OpenSees developers manage the source code at GitHub.

Acronym

The proper acronym capitalization for the "Open System for Earthquake Engineering Simulation" is OpenSees, as opposed to OpenSEES. This reflects the same unconventional capitalization of Tcl.

History

Prior to taking on the name "OpenSees," the framework was simply called "G3" in reference to the name of the PEER research group tasked with simulation development. The doctoral thesis of Frank McKenna on parallel object-oriented structural analysis formed the basis for "G3."

Actual Version is 3.3.0 in May 2021.

References
  1. "Copyright". University of California, Berkeley. Retrieved 2014-05-16.
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