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A probabilistic model for multiaxial high cycle fatigue
Author(s) -
DOUDARD C.,
HILD F.,
CALLOCH S.
Publication year - 2007
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2006.01087.x
Subject(s) - weibull distribution , probabilistic logic , statistical model , point (geometry) , reliability engineering , structural engineering , computer science , engineering , mathematics , statistics , artificial intelligence , geometry
ABSTRACT A probabilistic framework developed to model multiaxial high cycle fatigue tests is proposed. Up to now, with a probabilistic point of view (i.e., Weibull law), models account for the stress heterogeneity effect by introducing the concept of effective volume. It is proposed to extend this concept to multiaxial load histories. It consists in introducing a factor representing the distribution of activated slip directions. The non‐proportionality effect is taken into account with no additional parameter with respect to traditional (i.e., Weibull) probabilistic approaches. The proposed model is validated on a large experimental data base and compared with other models.