一种迭代算法在结构物理参数识别中的应用
|
摘要
本文在利用复合反演方法进行剪切型结构物理参数识别过程中,引入一种迭代算法来求解关于参数的病态方程组,探讨了几种比例阻尼形式的比例系数识别的处理方法。以10层剪切型框架结构为例,利用该迭代算法研究了无阻尼、三种比例阻尼形式以及噪信比为5%、10%的高斯白噪声等情形下的参数识别问题。结果表明,该迭代算法能很好地求解参数的病态方程组,且对四种阻尼形式和两种噪信比的噪声有很好的适应性。
An iterative algorithm is introduced for identifying the physical parameters(stiffness and damping) of shear-type structure by using the compound inversion method.The processing method for three types of proportional damping to estimate the damping coefficients is discussed.The parameter identification of a ten-storey shear-type frame structure has been performed by using the algorithm in the cases of non-damping system,three types of proportional damping system and Gauss white noise with the noise-to-signal of 5%and 10%.The results show that the algorithm has good capability for solving the ill-conditioned equations and has good adaptability for four types of damping and two noise-level noise.
An iterative algorithm is introduced for identifying the physical parameters(stiffness and damping) of shear-type structure by using the compound inversion method.The processing method for three types of proportional damping to estimate the damping coefficients is discussed.The parameter identification of a ten-storey shear-type frame structure has been performed by using the algorithm in the cases of non-damping system,three types of proportional damping system and Gauss white noise with the noise-to-signal of 5%and 10%.The results show that the algorithm has good capability for solving the ill-conditioned equations and has good adaptability for four types of damping and two noise-level noise.
引文
[1]Koh C G,et al.Estimation of structural parameters in time domain:A substructure approach[J].EESD,1991,20(8):787-801.
[2]Oreta A W C,Tanabe T.Element identification of member properties of framed structures[J].ASCE,1994,SE120(7):1961-1976.
[3]Wang D,Haldar A.System identification with limited observations and without input[J].ASCE,1997,EM123(5):504-511.
[4]李杰,陈隽.结构参数未知条件下的地震动反演研究[J].地震工程与工程振动,1997,17(3):27-35.
[5]陈隽.高层建筑损伤检测中的复合反演理论与试验研究[D].上海:同济大学,1999.
[6]冯新,周晶,陈健云.一种结构参数识别的两阶段方法[J].计算力学学报,2002,19(2):222-227.
[7]荆武兴,吴瑶华,王学孝.一种求解任意线性代数方程组的迭代算法[J].哈尔滨工业大学学报,1990,22(1):49-53.
[8]李国强,李杰.工程结构动力检测理论与应用[M].北京:科学出版社,2002.
[9]裴星洙,张立.高层建筑结构地震响应的时程分析法[M].北京:中国水利水电出版社,知识产权出版社,2006.
[10]赵昕.工程结构时域系统识别研究[D].上海:同济大学,2003.
[2]Oreta A W C,Tanabe T.Element identification of member properties of framed structures[J].ASCE,1994,SE120(7):1961-1976.
[3]Wang D,Haldar A.System identification with limited observations and without input[J].ASCE,1997,EM123(5):504-511.
[4]李杰,陈隽.结构参数未知条件下的地震动反演研究[J].地震工程与工程振动,1997,17(3):27-35.
[5]陈隽.高层建筑损伤检测中的复合反演理论与试验研究[D].上海:同济大学,1999.
[6]冯新,周晶,陈健云.一种结构参数识别的两阶段方法[J].计算力学学报,2002,19(2):222-227.
[7]荆武兴,吴瑶华,王学孝.一种求解任意线性代数方程组的迭代算法[J].哈尔滨工业大学学报,1990,22(1):49-53.
[8]李国强,李杰.工程结构动力检测理论与应用[M].北京:科学出版社,2002.
[9]裴星洙,张立.高层建筑结构地震响应的时程分析法[M].北京:中国水利水电出版社,知识产权出版社,2006.
[10]赵昕.工程结构时域系统识别研究[D].上海:同济大学,2003.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心