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MODELLING OF STRESS GRADIENT EFFECT ON FATIGUE LIFE USING WEIBULL BASED DISTRIBUTION FUNCTION

hal.structure.identifierOpole University of Technology
dc.contributor.authorKAROLCZUK, Aleksander
dc.contributor.authorPALIN LUC, Thierry
IDREF: 136498752
dc.date.accessioned2021-05-14T10:00:40Z
dc.date.available2021-05-14T10:00:40Z
dc.date.issued2013
dc.identifier.issn1429-2955
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/78149
dc.description.abstractEnIn the present paper, a new approach is developed in order to take into account the stress gradient effect on fatigue life of structural components. The proposed approach is based on the weakest link concept in which the shape coefficient of the Weibull distribution becomes a function of a local damage parameter. The function simulates the experimentally observed relationship between the shape of the fatigue life distribution and the stress level. Such an approach allows one to calculate the global probability distribution of the fatigue life for notched structural components in a wide range of fatigue life regime: 104-107 cycles typically. For comparison purposes, the approach is applied to calculate the number of cycles to crack initiation of structural elements under three probability levels: 5%, 63% and 95%. The calculated lifetimes are compared with the lifetimes obtained from experiments performed on notched cruciform specimens and notched round specimens subjected to constant amplitude loading.
dc.language.isoen
dc.publisherPolish Society of theoretical and applied Mechanics
dc.subject.enStress gradient effect
dc.subject.enFatigue life
dc.subject.enWeakest link concept
dc.title.enMODELLING OF STRESS GRADIENT EFFECT ON FATIGUE LIFE USING WEIBULL BASED DISTRIBUTION FUNCTION
dc.typeArticle de revue
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Génie mécanique [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Génie mécanique [physics.class-ph]
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des solides [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des solides [physics.class-ph]
bordeaux.journalJournal of Theoretical and Applied Mechanics
bordeaux.page297-311
bordeaux.volume51
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.issue2
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedoui
hal.identifierhal-01057889
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01057889v1
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