OpenSees

Repository	github.com/OpenSees/OpenSees/
Written in	C++
Operating system	Linux, Windows and Unix-like
License	http://opensees.berkeley.edu/OpenSees/copyright.php
Website	opensees.berkeley.edu

OpenSees (the Open System for

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

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.

Licensing

The license permits the use, reproduction, modification, and distribution by educational, research, and non-profit entities for non-commercial purposes. Use, reproduction, and modification by other entities is allowed for internal purposes, but these entities cannot redistribute the program or its derivatives.[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."

The current version as of March 2024 is 3.6.0.

References

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

External links

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