{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,18]],"date-time":"2025-12-18T14:07:42Z","timestamp":1766066862979,"version":"3.41.2"},"reference-count":29,"publisher":"Emerald","issue":"2","license":[{"start":{"date-parts":[[2018,4,16]],"date-time":"2018-04-16T00:00:00Z","timestamp":1523836800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.emerald.com\/insight\/site-policies"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["EC"],"published-print":{"date-parts":[[2018,4,16]]},"abstract":"<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Purpose<\/jats:title>\n<jats:p>The purpose of this paper is to predict the yield locus of porous ductile materials, evaluate the impact of void geometry and compare the computational results with existing analytical models.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Design\/methodology\/approach<\/jats:title>\n<jats:p>A computational homogenization strategy for the definition of the elasto-plastic transition is proposed. Representative volume elements (RVEs) containing single-centred ellipsoidal voids are analysed using three-dimensional finite element models under the geometrically non-linear hypothesis of finite strains. Yield curves are obtained by means of systematic analysis of RVEs considering different kinematical models: linear boundary displacements (upper bound), boundary displacement fluctuation periodicity and uniform boundary traction (lower bound).<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Findings<\/jats:title>\n<jats:p>The influence of void geometry is captured and the reduction in the material strength is observed. Analytical models usually overestimate the impact of void geometry on the yield locus.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title content-type=\"abstract-subheading\">Originality\/value<\/jats:title>\n<jats:p>This paper proposes an alternative criterion for porous ductile materials and assesses the accuracy of analytical models through the simulation of three-dimensional finite element models under geometrically non-linear hypothesis.<\/jats:p>\n<\/jats:sec>","DOI":"10.1108\/ec-03-2017-0069","type":"journal-article","created":{"date-parts":[[2018,2,28]],"date-time":"2018-02-28T19:22:49Z","timestamp":1519845769000},"page":"604-621","source":"Crossref","is-referenced-by-count":7,"title":["Prediction of the yielding behaviour of ductile porous materials through computational homogenization"],"prefix":"10.1108","volume":"35","author":[{"given":"Rodrigo","family":"Pinto Carvalho","sequence":"first","affiliation":[]},{"given":"Igor A.","family":"Rodrigues Lopes","sequence":"additional","affiliation":[]},{"given":"Francisco M.","family":"Andrade Pires","sequence":"additional","affiliation":[]}],"member":"140","reference":[{"issue":"3","key":"key2020092911071840800_ref001","doi-asserted-by":"crossref","first-page":"397","DOI":"10.1016\/S0997-7538(01)01147-0","article-title":"Plastic potentials for anisotropic porous solids","volume":"20","year":"2001","journal-title":"European Journal of Mechanics - A\/Solids"},{"key":"key2020092911071840800_ref002","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1016\/S0065-2156(10)44003-X","article-title":"Ductile fracture by void growth to coalescence","volume":"44","year":"2010","journal-title":"Advances in Applied Mechanics"},{"key":"key2020092911071840800_ref003","doi-asserted-by":"crossref","first-page":"240","DOI":"10.1016\/j.ijsolstr.2015.03.003","article-title":"A model for ductile damage prediction at low stress triaxialities incorporating void shape change and void rotation","volume":"63","year":"2015","journal-title":"International Journal of Solids and Structures"},{"issue":"3","key":"key2020092911071840800_ref004","first-page":"427","article-title":"A general constitutive theory for linear and nonlinear particulate media with microstructure evolution","volume":"46","year":"1992","journal-title":"Journal of the Mechanics and Physics of Solids"},{"issue":"8","key":"key2020092911071840800_ref005","doi-asserted-by":"crossref","first-page":"1757","DOI":"10.1016\/0022-5096(92)90050-C","article-title":"New variational principles in plasticity and their application to composite materials","volume":"40","year":"1992","journal-title":"Journal of the Mechanics and Physics of Solids"},{"issue":"6","key":"key2020092911071840800_ref006","doi-asserted-by":"crossref","first-page":"2544","DOI":"10.1016\/j.compositesb.2011.12.011","article-title":"Numerical modeling of elasto-plastic porous materials with void shape effects at finite deformations","volume":"43","year":"2012","journal-title":"Composites Part B"},{"issue":"3","key":"key2020092911071840800_ref007","doi-asserted-by":"crossref","first-page":"387","DOI":"10.1016\/j.euromechsol.2008.11.002","article-title":"A finite-strain model for anisotropic viscoplastic porous media: I\u2013theory","volume":"28","year":"2009","journal-title":"Eur. 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