Abstract
A parameter identification algorithm is developed for two-dimensional orthotropic material bodies. The proposed algorithm is based on the minimization of the objective function that is defined as a square sum of differences between measured displacement and calculated displacement by a boundary element model. The minimization problem is solved by using Levenberg-Marquardt method in which the calculation of Jacobian matrix is based on the differentiation of the discretized algebraic boundary element matrix equations. Some numerical examples are given to illustrate the validity of the proposed algorithm for parameter identification.
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