Global sensitivity analysis in the identification of cohesive models using full-field kinematic data

Handle URI:
http://hdl.handle.net/10754/564081
Title:
Global sensitivity analysis in the identification of cohesive models using full-field kinematic data
Authors:
Alfano, Marco; Lubineau, Gilles ( 0000-0002-7370-6093 ) ; Paulino, Gláucio Hermogenes
Abstract:
Failure of adhesive bonded structures often occurs concurrent with the formation of a non-negligible fracture process zone in front of a macroscopic crack. For this reason, the analysis of damage and fracture is effectively carried out using the cohesive zone model (CZM). The crucial aspect of the CZM approach is the precise determination of the traction-separation relation. Yet it is usually determined empirically, by using calibration procedures combining experimental data, such as load-displacement or crack length data, with finite element simulation of fracture. Thanks to the recent progress in image processing, and the availability of low-cost CCD cameras, it is nowadays relatively easy to access surface displacements across the fracture process zone using for instance Digital Image Correlation (DIC). The rich information provided by correlation techniques prompted the development of versatile inverse parameter identification procedures combining finite element (FE) simulations and full field kinematic data. The focus of the present paper is to assess the effectiveness of these methods in the identification of cohesive zone models. In particular, the analysis is developed in the framework of the variance based global sensitivity analysis. The sensitivity of kinematic data to the sought cohesive properties is explored through the computation of the so-called Sobol sensitivity indexes. The results show that the global sensitivity analysis can help to ascertain the most influential cohesive parameters which need to be incorporated in the identification process. In addition, it is shown that suitable displacement sampling in time and space can lead to optimized measurements for identification purposes.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Composite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
Publisher:
Elsevier BV
Journal:
International Journal of Solids and Structures
Issue Date:
Mar-2015
DOI:
10.1016/j.ijsolstr.2014.06.006
Type:
Article
ISSN:
00207683
Sponsors:
The authors wish to thank King Abdullah University of Science and Technology (KAUST) for supporting this research. M.A. gratefully acknowledges the financial support from University of Calabria (ex MURST 60%), and the support received from University of Illinois during his visit at the Department of Civil and Environmental Engineering in 2013.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorAlfano, Marcoen
dc.contributor.authorLubineau, Gillesen
dc.contributor.authorPaulino, Gláucio Hermogenesen
dc.date.accessioned2015-08-03T12:31:17Zen
dc.date.available2015-08-03T12:31:17Zen
dc.date.issued2015-03en
dc.identifier.issn00207683en
dc.identifier.doi10.1016/j.ijsolstr.2014.06.006en
dc.identifier.urihttp://hdl.handle.net/10754/564081en
dc.description.abstractFailure of adhesive bonded structures often occurs concurrent with the formation of a non-negligible fracture process zone in front of a macroscopic crack. For this reason, the analysis of damage and fracture is effectively carried out using the cohesive zone model (CZM). The crucial aspect of the CZM approach is the precise determination of the traction-separation relation. Yet it is usually determined empirically, by using calibration procedures combining experimental data, such as load-displacement or crack length data, with finite element simulation of fracture. Thanks to the recent progress in image processing, and the availability of low-cost CCD cameras, it is nowadays relatively easy to access surface displacements across the fracture process zone using for instance Digital Image Correlation (DIC). The rich information provided by correlation techniques prompted the development of versatile inverse parameter identification procedures combining finite element (FE) simulations and full field kinematic data. The focus of the present paper is to assess the effectiveness of these methods in the identification of cohesive zone models. In particular, the analysis is developed in the framework of the variance based global sensitivity analysis. The sensitivity of kinematic data to the sought cohesive properties is explored through the computation of the so-called Sobol sensitivity indexes. The results show that the global sensitivity analysis can help to ascertain the most influential cohesive parameters which need to be incorporated in the identification process. In addition, it is shown that suitable displacement sampling in time and space can lead to optimized measurements for identification purposes.en
dc.description.sponsorshipThe authors wish to thank King Abdullah University of Science and Technology (KAUST) for supporting this research. M.A. gratefully acknowledges the financial support from University of Calabria (ex MURST 60%), and the support received from University of Illinois during his visit at the Department of Civil and Environmental Engineering in 2013.en
dc.publisherElsevier BVen
dc.subjectCohesive zone modelen
dc.subjectDouble Cantilever Beamen
dc.subjectIdentificationen
dc.subjectSensitivity analysisen
dc.subjectSobol indexesen
dc.titleGlobal sensitivity analysis in the identification of cohesive models using full-field kinematic dataen
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 of Solids and Structuresen
dc.contributor.institutionDepartment of Mechanical, Energy and Management Engineering, University of Calabria, Via P. Bucci 44CRende, CS, Italyen
dc.contributor.institutionDepartment of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 205 N. Matthew AvenueUrbana, IL, United Statesen
kaust.authorAlfano, Marcoen
kaust.authorLubineau, Gillesen
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