A 3D domain decomposition approach for the identification of spatially varying elastic material parameters

Handle URI:
http://hdl.handle.net/10754/564066
Title:
A 3D domain decomposition approach for the identification of spatially varying elastic material parameters
Authors:
Moussawi, Ali ( 0000-0002-5978-7990 ) ; Lubineau, Gilles ( 0000-0002-7370-6093 ) ; Xu, Jiangping; Pan, Bing
Abstract:
Summary: The post-treatment of (3D) displacement fields for the identification of spatially varying elastic material parameters is a large inverse problem that remains out of reach for massive 3D structures. We explore here the potential of the constitutive compatibility method for tackling such an inverse problem, provided an appropriate domain decomposition technique is introduced. In the method described here, the statically admissible stress field that can be related through the known constitutive symmetry to the kinematic observations is sought through minimization of an objective function, which measures the violation of constitutive compatibility. After this stress reconstruction, the local material parameters are identified with the given kinematic observations using the constitutive equation. Here, we first adapt this method to solve 3D identification problems and then implement it within a domain decomposition framework which allows for reduced computational load when handling larger problems.
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:
24-Feb-2015
DOI:
10.1002/nme.4853
Type:
Article
ISSN:
00295981
Sponsors:
This work has been supported by KAUST baseline and competitive funding.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorMoussawi, Alien
dc.contributor.authorLubineau, Gillesen
dc.contributor.authorXu, Jiangpingen
dc.contributor.authorPan, Bingen
dc.date.accessioned2015-08-03T12:30:34Zen
dc.date.available2015-08-03T12:30:34Zen
dc.date.issued2015-02-24en
dc.identifier.issn00295981en
dc.identifier.doi10.1002/nme.4853en
dc.identifier.urihttp://hdl.handle.net/10754/564066en
dc.description.abstractSummary: The post-treatment of (3D) displacement fields for the identification of spatially varying elastic material parameters is a large inverse problem that remains out of reach for massive 3D structures. We explore here the potential of the constitutive compatibility method for tackling such an inverse problem, provided an appropriate domain decomposition technique is introduced. In the method described here, the statically admissible stress field that can be related through the known constitutive symmetry to the kinematic observations is sought through minimization of an objective function, which measures the violation of constitutive compatibility. After this stress reconstruction, the local material parameters are identified with the given kinematic observations using the constitutive equation. Here, we first adapt this method to solve 3D identification problems and then implement it within a domain decomposition framework which allows for reduced computational load when handling larger problems.en
dc.description.sponsorshipThis work has been supported by KAUST baseline and competitive funding.en
dc.publisherWiley-Blackwellen
dc.subjectConstitutive compatibility methoden
dc.subjectDomain decompositionen
dc.subjectFull-field measurementen
dc.subjectIdentificationen
dc.subjectInverse problemen
dc.titleA 3D domain decomposition approach for the identification of spatially varying elastic 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.institutionInstitute of Solid Mechanics, Beijing University of Aeronautics and AstronauticsBeijing, Chinaen
kaust.authorMoussawi, Alien
kaust.authorLubineau, Gillesen
kaust.authorXu, Jiangpingen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.