Modeling of Magnetorheological Self-Centering Brace
Publication: Journal of Engineering Mechanics
Volume 146, Issue 1
Abstract
The self-centering brace (SCB) is a high-capacity structural component for lateral force resistance and recentering. This paper focuses on modeling the magnetorheological self-centering brace (MR–SCB). Full-scale cyclic tests of the MR–SCB under sine waves are conducted. Results indicate that the MR–SCB exhibits a full flag-shaped force-displacement response with high energy dissipation and recentering capabilities. Three mechanical models of the MR–SCB are proposed to reproduce the hysteretic behaviors. Predicted errors of the modified Bouc–Wen-based model are smaller than those of the other two models. Considering high numerical convergence and low computational cost, the modified Bouc–Wen-based model is the best choice for prediction, and 12 model parameters are analyzed to determine reasonable values. Due to earthquake excitation, the hysteretic response of the MR–SCB is fuller than that of the existing SCB, indicating greater energy dissipation.
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Data Availability Statement
All models and code generated or used during the study appear in the published paper. All data generated or used during the study is available from the corresponding author by request (test data used in Figs. 3–5, 8, 10, 12, and 16).
Acknowledgments
The writers gratefully acknowledge the partial support of this research by the National Key Research and Development Program of China under Grant No. 2016YFC0701100, the National Natural Science Foundation of China under Grant No. 51578058, and the Beijing Natural Science Foundation of China under Grant No. 8172038.
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Published In
Journal of Engineering Mechanics
Volume 146 • Issue 1 • January 2020
Copyright
©2019 American Society of Civil Engineers.
History
Received: Sep 28, 2018
Accepted: May 28, 2019
Published online: Oct 30, 2019
Published in print: Jan 1, 2020
Discussion open until: Mar 30, 2020
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