标题：Optimal measurement placement for material parameter identification of orthotropic composites by the finite element method
作者：Huang, Lixin ;Guo, Xiangwu ;Du, Botao ;Zhou, Xiaojun ;Liu, Yuyin
作者机构：[Huang, Lixin ;Du, Botao ;Liu, Yuyin ] School of Civil Engineering, Guangxi University, Nanning 530004, China;[Zhou, Xiaojun ] Guangzhou Urban Plannin 更多
会议名称：2011 International Conference on Civil Engineering and Transportation, ICCET 2011
会议日期：October 14, 2010 - October 16, 2010
来源：Applied Mechanics and Materials
摘要：An algorithm of the optimal measurement placement is proposed for the material parameter identification of two-dimensional orthotropic composites, which is modeled by the finite element. From the analysis of the system sensitivity matrix of the parameter identification processes using the Levenberg-Marquardt method, A-optimality criterion related with the Fisher Information Matrix (FIM) is selected for the criterion of the optimal measurement placement. Thus, the algorithm for selecting the optimal measurement placement can be constructed. A numerical example is given to demonstrate the effectiveness of the proposed algorithm. The example reveals that the measurement placement has a significant influence on the identification results. © (2011) Trans Tech Publications, Switzerland.