Predicting residual strength of multi-cracked thin sheet plates based on CTOA or cohesive crack model using the extended finite element method

An extended finite element method is applied to predict residual strength of cracked thin sheet plates. Two kinds of middle tension M(T) testings different in initial crack direction are simulated for stable crack growth process based on a crack tip opening angle criterion or a cohesive crack model....

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 10; no. 1; p. 012063
Main Authors Chau-Dinh, T, Zi, G, Kim, J
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2010
Subjects
Cohesion
Computer simulation
Crack propagation
Crack tips
Cracks
Finite element analysis
Finite element method
Mathematical analysis
Mathematical models
Plates
Residual strength
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Summary:An extended finite element method is applied to predict residual strength of cracked thin sheet plates. Two kinds of middle tension M(T) testings different in initial crack direction are simulated for stable crack growth process based on a crack tip opening angle criterion or a cohesive crack model. Crack growth direction is determined from direction of the maximum principal stress at the crack tip. Material follows plane-stress J2 plasticity with linear isotropic/kinematic hardening. The residual strength and crack propagation path obtained by the extended finite element method are compared to experimental measurement and show reasonable agreement.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1757-899X
1757-8981
1757-899X
DOI:10.1088/1757-899X/10/1/012063