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OpenSees User

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The OpenSees User pages are intended for users of the OpenSees applications:

  1. OpenSees.exe
  2. OpenSeesSP.exe
  3. OpenSeesMP.exe

These applications are all interpreters which interpret input written in an extended form of the Tcl programming language. The extensions to the Tcl language are for finite element analysis using the classes provided for in the OpenSees Framework.

User Documentation



The OpenSees Getting Started manual provides a step by step instruction on how to obtain, install, and use OpenSees. For users who have never used OpenSees or a command line interpreter, it is a useful document to read before you go any further.




The OpenSees Command Manual is now in wiki form. Users and code developers are encouraged to add and correct the manual as the see fit.
The Command Manual details those new commands that have been added to Tcl by the OpenSees interpreters.
In the command manual we only detail those commands added to Tcl for finite element programming.


  • Thermal


The OpenSees Developers Group at the University of Edinburgh is developing and has included thermal capabilities in OpenSees. They have added new Thermal Commands to the interpreter (version 2.4.0+) and provide some Examples on their usage.




The OpenSees Examples is a resource for OpenSees users, containing educational and practical examples for beginner through advanced users.

  • Thermal




Discovering OpenSees is a resource for OpenSees users, containing recordings (videos), PPT presentations and accompanying examples from web-based learning series. The topics covered in these learning series are targeted for users of all levels, from the first time users up to advanced users.

Materials from Past Workshops

  1. OpenSees Days 2011 slide presentations
  2. OpenSees Days 2010 Video of Presentations


Tools and Applications

  1. BuildingTclLogo small.GIF: a Real-Time Interface, graphical and scriptical, for Numerical Simulation in OpenSees
  2. | OpenSees Navigator
Personal tools