Please use this identifier to cite or link to this item: https://doi.org/10.1016/0167-6636(95)00030-5
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dc.titleAn approximate yield criterion for voided nonlinear materials
dc.contributor.authorWang, Z.-P.
dc.contributor.authorLam, K.Y.
dc.contributor.authorCotterell, B.
dc.date.accessioned2014-06-17T05:08:19Z
dc.date.available2014-06-17T05:08:19Z
dc.date.issued1996-04
dc.identifier.citationWang, Z.-P., Lam, K.Y., Cotterell, B. (1996-04). An approximate yield criterion for voided nonlinear materials. Mechanics of Materials 22 (4) : 291-300. ScholarBank@NUS Repository. https://doi.org/10.1016/0167-6636(95)00030-5
dc.identifier.issn01676636
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/57874
dc.description.abstractAn approximate yield criterion (Eq. (40)) for voided nonlinear materials is proposed in which the effect of material hardening is directly included. The matrix is assumed to be a power-law material and approximate velocity fields for the matrix are employed to derive the yield function. Analysis indicates that the shape of yield surface in stress space expands along with increasing strain-hardening exponent N. For N = 0, the Gurson yield function is derived. And as N = 1, an analytical expression of the yield function in the form of ellipsoid is obtained. Furthermore, as 0 < N < 1, an approximate expression for the yield function is suggested. A comparison between the approximate yield function and Cocks' model (1989) is carried out. The agreement of the two models is very good.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/0167-6636(95)00030-5
dc.sourceScopus
dc.subjectEffect of material hardening
dc.subjectStress potential
dc.subjectVoided nonlinear material
dc.subjectYield function
dc.typeArticle
dc.contributor.departmentMECHANICAL & PRODUCTION ENGINEERING
dc.description.doi10.1016/0167-6636(95)00030-5
dc.description.sourcetitleMechanics of Materials
dc.description.volume22
dc.description.issue4
dc.description.page291-300
dc.description.codenMSMSD
dc.identifier.isiutA1996UH90300004
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