A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEM

Detailed characterization of linear elastic stress states at corners and crack tips requires knowledge of the stress singularity orders, the characteristic angular functions and the generalized stress intensity factors (GSIF). Typically a high accuracy is found in the literature for the evaluation o...

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Autores: Barroso Caro, Alberto, Graciani Díaz, Enrique, Mantic, Vladislav, París Carballo, Federico
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2012
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/157626
Acceso en línea:https://hdl.handle.net/11441/157626
https://doi.org/10.1016/j.enganabound.2011.09.011
Access Level:acceso abierto
Palabra clave:Stress intensity factor
Linear elastic anisotropic material
Multimaterial wedge
Singularity analysis
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spelling A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEMBarroso Caro, AlbertoGraciani Díaz, EnriqueMantic, VladislavParís Carballo, FedericoStress intensity factorLinear elastic anisotropic materialMultimaterial wedgeSingularity analysisDetailed characterization of linear elastic stress states at corners and crack tips requires knowledge of the stress singularity orders, the characteristic angular functions and the generalized stress intensity factors (GSIF). Typically a high accuracy is found in the literature for the evaluation of the stress singularity orders and characteristic angular functions (numerically computed from analytical expressions in most cases). Nevertheless, GSIF values, evaluated by means of a numerical model using FEM or BEM and usually by postprocessing the results, are often reported with a lower level of confidence. A robust procedure is presented in this work for the evaluation of the GSIF at multimaterial corners. The procedure is based on a simple least squares technique involving stresses and/or displacements, computed by BEM, at the neighborhood of the corner tip. A careful verification of the robustness and accuracy of the procedure using a few benchmark problems in the literature has been carried out. Applications of the procedure developed to the evaluation of GSIFs appearing at corners in metal-composite adhesive lap joints are presented.ElsevierMecánica de Medios Continuos y Teoría de EstructurasTEP131: Grupo de Elasticidad y Resistencia de MaterialesJunta de AndalucíaEuropean Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/157626https://doi.org/10.1016/j.enganabound.2011.09.011reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésEngineering Analysis with Boundary Elements, 36 (3), 458-470.P08-TEP-04071P08-TEP-04051https://www.sciencedirect.com/science/article/pii/S0955799711002128info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1576262026-06-17T12:51:07Z
dc.title.none.fl_str_mv A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEM
title A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEM
spellingShingle A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEM
Barroso Caro, Alberto
Stress intensity factor
Linear elastic anisotropic material
Multimaterial wedge
Singularity analysis
title_short A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEM
title_full A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEM
title_fullStr A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEM
title_full_unstemmed A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEM
title_sort A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEM
dc.creator.none.fl_str_mv Barroso Caro, Alberto
Graciani Díaz, Enrique
Mantic, Vladislav
París Carballo, Federico
author Barroso Caro, Alberto
author_facet Barroso Caro, Alberto
Graciani Díaz, Enrique
Mantic, Vladislav
París Carballo, Federico
author_role author
author2 Graciani Díaz, Enrique
Mantic, Vladislav
París Carballo, Federico
author2_role author
author
author
dc.contributor.none.fl_str_mv Mecánica de Medios Continuos y Teoría de Estructuras
TEP131: Grupo de Elasticidad y Resistencia de Materiales
Junta de Andalucía
European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)
dc.subject.none.fl_str_mv Stress intensity factor
Linear elastic anisotropic material
Multimaterial wedge
Singularity analysis
topic Stress intensity factor
Linear elastic anisotropic material
Multimaterial wedge
Singularity analysis
description Detailed characterization of linear elastic stress states at corners and crack tips requires knowledge of the stress singularity orders, the characteristic angular functions and the generalized stress intensity factors (GSIF). Typically a high accuracy is found in the literature for the evaluation of the stress singularity orders and characteristic angular functions (numerically computed from analytical expressions in most cases). Nevertheless, GSIF values, evaluated by means of a numerical model using FEM or BEM and usually by postprocessing the results, are often reported with a lower level of confidence. A robust procedure is presented in this work for the evaluation of the GSIF at multimaterial corners. The procedure is based on a simple least squares technique involving stresses and/or displacements, computed by BEM, at the neighborhood of the corner tip. A careful verification of the robustness and accuracy of the procedure using a few benchmark problems in the literature has been carried out. Applications of the procedure developed to the evaluation of GSIFs appearing at corners in metal-composite adhesive lap joints are presented.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/157626
https://doi.org/10.1016/j.enganabound.2011.09.011
url https://hdl.handle.net/11441/157626
https://doi.org/10.1016/j.enganabound.2011.09.011
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Engineering Analysis with Boundary Elements, 36 (3), 458-470.
P08-TEP-04071
P08-TEP-04051
https://www.sciencedirect.com/science/article/pii/S0955799711002128
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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