Description of geometric nonlinearity for beam-column analysis in OpenSees
نویسندگان
چکیده
Description of geometric nonlinearity for beam-column analysis in OpenSees" (2013). ii Northeastern University was founded in 1898, as a private research university. Northeastern University is a leader in worldwide experiential learning, urban engagement, and interdisciplinary research that meets global and societal needs. Department of Civil and Environmental Engineering has over 100 years of history and tradition in research, teaching and service to the community, making important contributions to the development of our civil infrastructure and the environment, both nationally and internationally. findings, and conclusions expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation or other sponsors. Abstract OpenSees is a powerful, object-oriented, open source software framework for simulating the seismic response of structural and geotechnical systems. It has broad capabilities, including geometric nonlinear analysis of frame structures. This report provides a brief description of the formulation for geometric nonlinearity for beam-column elements in OpenSees. The coding structure is described along with the general procedure for state determination. A mathematical description of the various coordinate transformations currently available within the OpenSees framework is presented for two-dimensional elements. Additionally, examples that illustrate the various coordinate transformations are shown.
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