Modified Constitutive Relation Error Strategy for Elastic Properties Identification

Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

The aim of this paper is to present an inverse approach dedicated to the exploitation of full-field measurements, to identify elastic properties of heterogeneous materials, such as composites. The method is based on the modified constitutive relation error principle and could be split in two steps. The first one consists in defining mechanical fields from the available theoretical and experimental data, for a fixed set of mechanical parameters, by the minimization of a criterion allowing a compromise between constitutive equation and measurements adequacy. The second step takes the form of minimizing a cost function defined by using these fields, to identify the sought material properties. Moreover, the robustness of the method was tested on some numerical examples where white Gaussian perturbations were added to displacement values to simulate an experimental errors.

Keywords

Modified constitutive relation error Identification Full-field measurements 

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Copyright information

© The Society for Experimental Mechanics, Inc. 2013

Authors and Affiliations

  1. 1.Roberval LaboratoryUniversity of Technology of Compiègne, Centre de Recherches de RoyallieuCompiègneFrance

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