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A non-local approach to model the combined effects of forging defects and shot-peening on the fatigue strength of a pearlitic steel

hal.structure.identifierLaboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]
hal.structure.identifierMatériaux, ingénierie et science [Villeurbanne] [MATEIS]
hal.structure.identifierLaboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
dc.contributor.authorGERIN, Benjamin
hal.structure.identifierLaboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
hal.structure.identifierLaboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]
dc.contributor.authorPESSARD, Etienne
hal.structure.identifierLaboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
dc.contributor.authorMOREL, Franck
hal.structure.identifierMatériaux, ingénierie et science [Villeurbanne] [MATEIS]
dc.contributor.authorVERDU, Catherine
dc.date.accessioned2021-05-14T09:40:52Z
dc.date.available2021-05-14T09:40:52Z
dc.date.issued2018-02
dc.identifier.issn0167-8442
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/76608
dc.description.abstractEnThis study focuses on the influence on fatigue behaviour of the surface integrity of a steel connecting rod. The component is hot-forged and shot-blasted, producing a complex surface state with large surface defects and high residual stresses. In a prior study, the surface was thoroughly characterized and fatigue tests were performed. Several different surface states were analysed in order to quantify the influence of the various surface aspects. These tests showed that the forging defects and the residual stresses are the most influential aspects of the surface. The goal of this paper is to develop an approach capable of taking into account the influence of both these aspects on fatigue behaviour.Two methods were developed. First, using surface scans of the fatigue specimens, the forging defects were fitted with ellipsoids so as to determine their size and shape. This allows to easily compare the numerous defects and test various criteria in order to identify the critical defect of each specimen. The second method used was the finite element simulation of the defects based on real topography scans. Using a non-local approach based on the theory of critical distances, the simulations were used to accurately predict the influence of the defects’ geometry. The residual stress profiles were integrated in the simulations using Dang Van’s criterion. The predictions are accurate and show the importance of taking into account the real defect geometry when estimating the fatigue strength.
dc.description.sponsorshipModélisation des effets de DEFauts et d'Intégrité de SURface sur la tenue en Fatigue dans les composants forgés - ANR-11-RMNP-0013
dc.language.isoen
dc.publisherElsevier
dc.subject.enForging
dc.subject.enShot-peening
dc.subject.enHigh cycle fatigue
dc.subject.enSurface defects
dc.subject.enNon-local approach
dc.title.enA non-local approach to model the combined effects of forging defects and shot-peening on the fatigue strength of a pearlitic steel
dc.typeArticle de revue
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des matériaux [physics.class-ph]
bordeaux.journalTheoretical and Applied Fracture Mechanics
bordeaux.page19-32
bordeaux.volume93
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedoui
hal.identifierhal-02295268
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02295268v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Theoretical%20and%20Applied%20Fracture%20Mechanics&rft.date=2018-02&rft.volume=93&rft.spage=19-32&rft.epage=19-32&rft.eissn=0167-8442&rft.issn=0167-8442&rft.au=GERIN,%20Benjamin&PESSARD,%20Etienne&MOREL,%20Franck&VERDU,%20Catherine&rft.genre=article


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