Response Sensitivity Analysis: Difference between revisions

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The OpenSees interpreters add [http://en.wikipedia.org/wiki/Command_(computing)  commands] to Tcl for finite element analysis. Each of these commands is associated (bound) with a C++ procedure that is provided. It is this procedure that is called upon by the interpreter to parse the command when it is encountered. In this document we focus primarily on those commands which have been added to Tcl by the OpenSees interpreters. All existing commands that exist in the Tcl language are available to these interpreters. We provide a brief [[Introduction To Tcl]], more detailed documentation on these existing commands can be found in books and on-line.
This manual is intended to outline the basic commands currently available within the OpenSees interpreter for performing DDM-based response sensitivity analysis. This interpreter is an extension of the Tcl/Tk language for use with OpenSees. The existing Tcl commands for Finite Element response-only computation are described in the OpenSees user’s guide available online at http://opensees.berkeley.edu and, thus, are not repeated in this document. The notation used herein is the same as that used in the Tcl commands manual for response-only computation. Only new Tcl commands for DDM-based response sensitivity computation are presented and explained in detail.


For OpenSees we have added commands to Tcl for finite element analysis. These commands can be grouped into four sections:
This manual is subdivided as follows:
# [[Modeling Commands]] commands added to the interpreter to create the finite element model.
# [[DDM-Based Response Sensitivity Computation Tcl Commands:]] commands added to the interpreter for response sensitivity computation.
# [[Analysis Commands]] commands added to Tcl to create the analysis procedure.
# [[Demonstration Examples:]] four demonstration examples used to illustrate and validate the DDM-based response sensitivity analysis components implemented in OpenSees.
# [[Output Commands]] commands aded to Tcl to monitor what is happening in the model during the analysis.
# [[Extension of an existing material,cross section, and element for DDM-based:]] the necessary functions needed for implementation of the DDM-based response sensitivity computation are listed and explained.
# [[Misc Commands]] commands added to Tcl to help monitor and modify the model and analysis during the run-time.
# [[Tcl input files for the provided application examples:]] Tcl input files for the above four application examples.


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Latest revision as of 07:49, 8 January 2011

Template:SensitivityAnalysisMenu


This manual is intended to outline the basic commands currently available within the OpenSees interpreter for performing DDM-based response sensitivity analysis. This interpreter is an extension of the Tcl/Tk language for use with OpenSees. The existing Tcl commands for Finite Element response-only computation are described in the OpenSees user’s guide available online at http://opensees.berkeley.edu and, thus, are not repeated in this document. The notation used herein is the same as that used in the Tcl commands manual for response-only computation. Only new Tcl commands for DDM-based response sensitivity computation are presented and explained in detail.

This manual is subdivided as follows:

  1. DDM-Based Response Sensitivity Computation Tcl Commands: commands added to the interpreter for response sensitivity computation.
  2. Demonstration Examples: four demonstration examples used to illustrate and validate the DDM-based response sensitivity analysis components implemented in OpenSees.
  3. Extension of an existing material,cross section, and element for DDM-based: the necessary functions needed for implementation of the DDM-based response sensitivity computation are listed and explained.
  4. Tcl input files for the provided application examples: Tcl input files for the above four application examples.
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