A Dissipation Gap Method for full-field measurement-based identification of elasto-plastic material parameters

Handle URI:
http://hdl.handle.net/10754/575560
Title:
A Dissipation Gap Method for full-field measurement-based identification of elasto-plastic material parameters
Authors:
Blaysat, Benoît; Florentin, Éric; Lubineau, Gilles ( 0000-0002-7370-6093 ) ; Moussawi, Ali ( 0000-0002-5978-7990 )
Abstract:
Using enriched data such as displacement fields obtained from digital image correlation is a pathway to the local identification of material parameters. Up to now, most of the identification techniques for nonlinear models are based on Finite Element Updating Methods. This article explains how an appropriate use of the Dissipation Gap Method can help in this context and be an interesting alternative to these classical techniques. The Dissipation Gap Methods rely on the concept of error in dissipation that has been used mainly for the verification of finite element simulations. We provide here an original application of these founding developments to the identification of material parameters for nonlinear behaviors. The proposed technique and especially the main technical keypoint of building the admissible fields are described in detail. The approach is then illustrated through the identification of heterogeneous isotropic elasto-plastic properties. The basic numerical features highlighted through these simple examples demonstrate this approach to be a promising tool for nonlinear identification. © 2012 John Wiley & Sons, Ltd.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Composite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
Publisher:
Wiley-Blackwell
Journal:
International Journal for Numerical Methods in Engineering
Issue Date:
18-May-2012
DOI:
10.1002/nme.4287
Type:
Article
ISSN:
00295981
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorBlaysat, Benoîten
dc.contributor.authorFlorentin, Éricen
dc.contributor.authorLubineau, Gillesen
dc.contributor.authorMoussawi, Alien
dc.date.accessioned2015-08-24T08:32:53Zen
dc.date.available2015-08-24T08:32:53Zen
dc.date.issued2012-05-18en
dc.identifier.issn00295981en
dc.identifier.doi10.1002/nme.4287en
dc.identifier.urihttp://hdl.handle.net/10754/575560en
dc.description.abstractUsing enriched data such as displacement fields obtained from digital image correlation is a pathway to the local identification of material parameters. Up to now, most of the identification techniques for nonlinear models are based on Finite Element Updating Methods. This article explains how an appropriate use of the Dissipation Gap Method can help in this context and be an interesting alternative to these classical techniques. The Dissipation Gap Methods rely on the concept of error in dissipation that has been used mainly for the verification of finite element simulations. We provide here an original application of these founding developments to the identification of material parameters for nonlinear behaviors. The proposed technique and especially the main technical keypoint of building the admissible fields are described in detail. The approach is then illustrated through the identification of heterogeneous isotropic elasto-plastic properties. The basic numerical features highlighted through these simple examples demonstrate this approach to be a promising tool for nonlinear identification. © 2012 John Wiley & Sons, Ltd.en
dc.publisherWiley-Blackwellen
dc.subjectDigital image correlationen
dc.subjectIdentificationen
dc.subjectInverse problemen
dc.subjectKinematic field measurementsen
dc.subjectPlasticityen
dc.titleA Dissipation Gap Method for full-field measurement-based identification of elasto-plastic material parametersen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentComposite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)en
dc.identifier.journalInternational Journal for Numerical Methods in Engineeringen
dc.contributor.institutionENS Cachan/CNRS/UPMC/PRES UniverSud Paris, LMT-Cachan, 61 Avenue du Président Wilson, F-94235 Cachan, Franceen
kaust.authorLubineau, Gillesen
kaust.authorMoussawi, Alien
kaust.authorFlorentin, Éricen
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