A study of the optimal measurement placement for parameter identification of orthotropic composites by the boundary element method

作者：Huang LX; Xiang ZH; Sun XS; Liu YH; Cen ZZ^*

来源：Computational Mechanics, 2006, 38(3): 201-209.

DOI：10.1007/s00466-005-0741-y

• parameter identification
• optimal measurement placement
• boundary element method
• orthotropic composites

This paper concentrates on the design of the optimal measurement placement for the parameter identification of two-dimensional orthotropic composites, which is modeled by the boundary element. From the analysis of the well-posedness of the parameter identification processes using the Levenberg-Marquardt method, a performance indicator and an estimation of the maximum bias of identified parameters are deduced. Based on these results, a method for selecting the optimal measurement placement is proposed. The validity of this method is illustrated by some numerical examples. These examples reveal that the measurement placement has significant influence on identification results. Furthermore, an iterative process of selecting measurement placement is suggested for practical implementation.

• 出版日期2006-8
• 单位清华大学