Identification of a set of macroscopic elastic parameters in a 3D woven composite: Uncertainty analysis and regularization

Handle URI:
http://hdl.handle.net/10754/564080
Title:
Identification of a set of macroscopic elastic parameters in a 3D woven composite: Uncertainty analysis and regularization
Authors:
Gras, Renaud; Leclerc, Hugo; Hild, Francois; Roux, Stéphane; Schneider, Julian David
Abstract:
Performing a single but complex mechanical test on small structures rather than on coupons to probe multiple strain states/histories for identification purposes is nowadays possible thanks to full-field measurements. The aim is to identify many parameters thanks to the heterogeneity of mechanical fields. Such an approach is followed herein, focusing on a blade root made of 3D woven composite. The performed test, which is analyzed using global Digital Image Correlation (DIC), provides heterogeneous kinematic fields due to the particular shape of the sample. This displacement field is further processed to identify the four in-plane material parameters of the macroscopic equivalent orthotropic behavior. The key point, which may limit the ability to draw reliable conclusions, is the presence of acquisition noise in the original images that has to be tracked along the DIC/identification processing to provide uncertainties on the identified parameters. A further regularization based on a priori knowledge is finally introduced to compensate for possible lack of experimental information needed for completing the identification.
KAUST Department:
Composite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS); Physical Sciences and Engineering (PSE) Division
Publisher:
Elsevier BV
Journal:
International Journal of Solids and Structures
Issue Date:
Mar-2015
DOI:
10.1016/j.ijsolstr.2013.12.023
Type:
Article
ISSN:
00207683
Sponsors:
The authors acknowledge the financial support provided by SNECMA (SAFRAN group).
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorGras, Renauden
dc.contributor.authorLeclerc, Hugoen
dc.contributor.authorHild, Francoisen
dc.contributor.authorRoux, Stéphaneen
dc.contributor.authorSchneider, Julian Daviden
dc.date.accessioned2015-08-03T12:31:15Zen
dc.date.available2015-08-03T12:31:15Zen
dc.date.issued2015-03en
dc.identifier.issn00207683en
dc.identifier.doi10.1016/j.ijsolstr.2013.12.023en
dc.identifier.urihttp://hdl.handle.net/10754/564080en
dc.description.abstractPerforming a single but complex mechanical test on small structures rather than on coupons to probe multiple strain states/histories for identification purposes is nowadays possible thanks to full-field measurements. The aim is to identify many parameters thanks to the heterogeneity of mechanical fields. Such an approach is followed herein, focusing on a blade root made of 3D woven composite. The performed test, which is analyzed using global Digital Image Correlation (DIC), provides heterogeneous kinematic fields due to the particular shape of the sample. This displacement field is further processed to identify the four in-plane material parameters of the macroscopic equivalent orthotropic behavior. The key point, which may limit the ability to draw reliable conclusions, is the presence of acquisition noise in the original images that has to be tracked along the DIC/identification processing to provide uncertainties on the identified parameters. A further regularization based on a priori knowledge is finally introduced to compensate for possible lack of experimental information needed for completing the identification.en
dc.description.sponsorshipThe authors acknowledge the financial support provided by SNECMA (SAFRAN group).en
dc.publisherElsevier BVen
dc.subjectAnisotropyen
dc.subjectDigital Image Correlationen
dc.subjectElastic materialen
dc.subjectFinite elementsen
dc.subjectMechanical testingen
dc.titleIdentification of a set of macroscopic elastic parameters in a 3D woven composite: Uncertainty analysis and regularizationen
dc.typeArticleen
dc.contributor.departmentComposite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalInternational Journal of Solids and Structuresen
dc.contributor.institutionLMT Cachan, ENS-Cachan/CNRS/UPMC/PRES UniverSud Paris, 61, Avenue du Président WilsonCachan Cedex, Franceen
dc.contributor.institutionSnecma Villaroche - Rond Point René RavaudRéau Moissy-Cramayel, Franceen
kaust.authorGras, Renauden
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