A simple multiaxial fatigue criterion for metals |
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Authors: | Camilla de Andrade Gon alves, Jos Alexander Araú jo,Edgar Nobuo Mamiya |
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Affiliation: | Departamento de Engenharia Mecânica, Universidade de Brasília, 70910-900 Brasília, DF, Brasil |
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Abstract: | A new simple multiaxial high-cycle fatigue endurance criterion, suitable for situations where the convex hull associated with the stress path approximates well an ellipsoid, is proposed. It considers, as measures of fatigue solicitation: (i) a new definition for the equivalent shear stress amplitude; and (ii) the maximum principal stress along the stress history. Assessment of the resulting criterion for a wide range of in-phase and out-phase cyclic loads shows that it compares very well with experimental data published in the literature. To cite this article: C.A. Gonçalves et al., C. R. Mecanique 332 (2004).RésuméOn propose un critère simple d'endurance à la fatigue polycyclique, applicable à des situations pour lesquelles l'envelope convexe associé à l'histoire des contraintes s'approche bien d'une ellipse. Le critère considère, comme mesures de solicitation à la fatigue : (i) une nouvelle définition de l'amplitude de contrainte de cisaillement ; et (ii) la contrainte principale maximale au cours de l'histoire de chargement. Pour citer cet article : C.A. Gonçalves et al., C. R. Mecanique 332 (2004). |
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Keywords: | Fatigue Fatigue strength Multiaxial high-cycle fatigue Nonproportional loadingMots-clé s: Fatigue É ndurance à la fatigue Fatigue multiaxiale polycyclique Chargement non-proportionel |
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