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Identification of materials properties using displacement field measurement

Fazzini, Marina and Dalverny, Olivier and Mistou, Sébastien Identification of materials properties using displacement field measurement. (2011) Key Engineering Materials, 482. 57-65. ISSN 1013-9826

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/KEM.482.57

Abstract

The aim of this work is to identify parameters driving constitutive equations of materials with displacement field measurements carried out by image stereo-correlation during an unidirectional tensile test. We evaluate two identification techniques. The first one is the virtual fields method which consists in writing the principle of virtual work with particular virtual fields. It is generally used in the case of linear elasticity and it requires a perfect knowledge of the model in terms of boundary condition since the virtual fields used must be kinematically admissible. This method allows to determine parameters by a direct and fast calculation, without iterations. The second method is the finite element model updating method. It consists in finding constitutive parameters that achieve the best match between finite element analysis quantities and their experimental counterparts. This method is more adaptable than the virtual field method but it needs to spend more calculation time.

Item Type:Article
Additional Information:Thanks to Trans Tech Publications editor. The definitive version is available at http://dx.doi.org/10.4028/www.scientific.net/KEM.482.57
HAL Id:hal-00815850
Audience (journal):Special issue journal
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Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
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Deposited On:19 Apr 2013 12:32

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