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Article: Dual boundary element method for analyzing three-dimensional cracks in layered and graded halfspaces

TitleDual boundary element method for analyzing three-dimensional cracks in layered and graded halfspaces
Authors
KeywordsLayered and graded halfspaces
Dual boundary element method
Fracture mechanics
Stress intensity factors
Infinite elements
Discontinuous elements
Issue Date2019
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/enganabound
Citation
Engineering Analysis with Boundary Elements, 2019, v. 104, p. 135-147 How to Cite?
AbstractThis paper presents a dual boundary element analysis of three-dimensional cracks in layered and graded halfspaces. The fundamental solution of a multilayered solid is used to develop the dual boundary element method so that only the external boundary surface and the crack surface need to be discretized while the material interfaces do not need to be discretized. Infinite boundary elements and crack-tip discontinuous elements are introduced to consider the far-fields of a layered halfspace and capture the crack-tip behavior, respectively. Special attentions are given to strongly singular and hypersingular integrals in the discretized displacement and traction boundary integral equations. For square-shaped, penny-shaped and elliptical cracks located in a homogeneous halfspace, the stress intensity factors obtained with the present formulation are in very good agreement with existing numerical results and closed-form solutions. The square-shaped cracks in horizontally layered halfspaces and the penny-shaped and elliptical cracks in graded halfspaces are analyzed. Results show that the material heterogeneity in layered and graded halfspaces can have a profound effect on the stress intensity factors.
Persistent Identifierhttp://hdl.handle.net/10722/274857
ISSN
2017 Impact Factor: 2.138
2015 SCImago Journal Rankings: 1.251
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXiao, S-
dc.contributor.authorYue, ZQ-
dc.contributor.authorXiao, H-
dc.date.accessioned2019-09-10T02:30:18Z-
dc.date.available2019-09-10T02:30:18Z-
dc.date.issued2019-
dc.identifier.citationEngineering Analysis with Boundary Elements, 2019, v. 104, p. 135-147-
dc.identifier.issn0955-7997-
dc.identifier.urihttp://hdl.handle.net/10722/274857-
dc.description.abstractThis paper presents a dual boundary element analysis of three-dimensional cracks in layered and graded halfspaces. The fundamental solution of a multilayered solid is used to develop the dual boundary element method so that only the external boundary surface and the crack surface need to be discretized while the material interfaces do not need to be discretized. Infinite boundary elements and crack-tip discontinuous elements are introduced to consider the far-fields of a layered halfspace and capture the crack-tip behavior, respectively. Special attentions are given to strongly singular and hypersingular integrals in the discretized displacement and traction boundary integral equations. For square-shaped, penny-shaped and elliptical cracks located in a homogeneous halfspace, the stress intensity factors obtained with the present formulation are in very good agreement with existing numerical results and closed-form solutions. The square-shaped cracks in horizontally layered halfspaces and the penny-shaped and elliptical cracks in graded halfspaces are analyzed. Results show that the material heterogeneity in layered and graded halfspaces can have a profound effect on the stress intensity factors.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/enganabound-
dc.relation.ispartofEngineering Analysis with Boundary Elements-
dc.subjectLayered and graded halfspaces-
dc.subjectDual boundary element method-
dc.subjectFracture mechanics-
dc.subjectStress intensity factors-
dc.subjectInfinite elements-
dc.subjectDiscontinuous elements-
dc.titleDual boundary element method for analyzing three-dimensional cracks in layered and graded halfspaces-
dc.typeArticle-
dc.identifier.emailYue, ZQ: yueqzq@hku.hk-
dc.identifier.authorityYue, ZQ=rp00209-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.enganabound.2019.03.021-
dc.identifier.scopuseid_2-s2.0-85063739848-
dc.identifier.hkuros303301-
dc.identifier.volume104-
dc.identifier.spage135-
dc.identifier.epage147-
dc.identifier.isiWOS:000469522100012-
dc.publisher.placeUnited Kingdom-

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