Analysis, optimization and identification of composite structures using boundary element method

Górski, Radosław and Fedelinski, Piotr (2005) Analysis, optimization and identification of composite structures using boundary element method. JOURNAL OF COMPUTATIONAL AND APPLIED MECHANICS, 6 (1). pp. 53-65. ISSN 1586-2070

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Abstract

In the paper the formulation and application of the subregion boundary element method (BEM) to static and dynamic analysis, optimization and identification of two-dimensional bodies are presented. The subregion method allows modeling of composite structures by assuming different material properties of particular regions. The governing BEM equations for all regions are combined using the condition of compatibility of displacements and equilibrium of tractions between the common interfaces. The transient problem is solved using the dual reciprocity method (DRM). The problem of optimization or identification is solved by the evolutionary algorithm (EA). Numerical examples showing the application of the combined BEM and EA are presented. The position of the interface in a two-zone composite plate is optimized in order to minimize support or interface tractions. The position and length of a crack between two materials are identified.

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