Systems Identification of Degrading Hysteretic Restoring Forces
Systems Identification of Degrading Hysteretic Restoring Forces
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DOI：
10.1061/(asce)0733-9399(1988)114:5(833
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发表时间：
1988-05
期刊：
影响因子：
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通讯作者：
R. Sues;S. Mau;Y. Wen
中科院分区：
文献类型：
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作者：
R. Sues;S. Mau;Y. Wen
Wen (1976; 1980) 以及 Baber 和 Wen (1981) 开发了一种用于承受极端动态载荷的结构的退化、迟滞恢复力模型。需要系统地识别该模型的参数。这里首先对该模型进行简要讨论，并进行扩展，以模拟钢筋混凝土结构的位移相关退化行为。然后开发了一种根据观察到的结构响应来识别模型参数的方法。该方法基于经典的时域最小二乘程序，其中系统参数是通过求解联立线性方程组获得的。参数识别方法在开发复杂结构模型以进行非线性、随机振动分析方面应该是有用的。基于参数识别方法的应用，利用实际的结构恢复力实验结果，提出了确定模型参数的简单规则，并在结论中提出。
A degrading, hysteretic restoring force model for structures subjected to extreme dynamic loads has been developed by Wen (1976; 1980) and Baber and Wen (1981). A need has arisen for systematically identifying the parameters of this model. A brief discussion of the model is first presented here along with an extension developed to model displacement-dependent degrading behavior of reinforced concrete structures. A method for identifying the parameters of the model, given observed structural response, is then developed. The method is based on a classic, time domain-least squares procedure where the system parameters are obtained by solving a system of simultaneous linear equations. The parameter identification method should prove useful in developing models of complex structures for nonlinear, random vibration analysis. Based on applications of the parameter identification method, using actual structural restoring force experimental results, simple rules for determining the model parameters are suggested and presented at the conclusion.