Abstract
In order to evaluate the nonlinear performance and the possible damage to rubber-bearings (RBs) during their normal operation or under strong earthquakes, a simplified Bouc-Wen model is used to describe the nonlinear hysteretic behavior of RBs in this paper, which has the advantages of being smooth-varying and physically motivated. Further, based on the results from experimental tests performed by using a particular type of RB (GZN110) under different excitation scenarios, including white noise and several earthquakes, a new system identification method, referred to as the sequential nonlinear least-square estimation (SNLSE), is introduced to identify the model parameters. It is shown that the proposed simplified Bouc-Wen model is capable of describing the nonlinear hysteretic behavior of RBs, and that the SNLSE approach is very effective in identifying the model parameters of RBs.
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Supported by: National Natural Science Foundation of China Under Grant No. 10572058; the Science Foundation of Aeronautics of China Under Grant No.2008ZA52012
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Yin, Q., Zhou, L. & Wang, X. Parameter identification of hysteretic model of rubber-bearing based on sequential nonlinear least-square estimation. Earthq. Eng. Eng. Vib. 9, 375–383 (2010). https://doi.org/10.1007/s11803-010-0022-4
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DOI: https://doi.org/10.1007/s11803-010-0022-4