Fatigue Fracture of Metals under Complex Stress State with Consideration of Structural Changes


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Abstract

A phenomenological model of brittle fatigue fracture in metals and alloys is discussed in the case of proportional (simple) loading. The model is formulated in the framework of the physico-mechanical approach as a system of hypotheses concerning the probability of defect evolution at various scale-structural levels, such as micro- and macrocracks. The described constitutive relations are based on this model. A number of fatigue curves are obtained for various limit states of metals.

About the authors

E. B. Zavoichinskaya

Faculty of Mechanics and Mathematics

Author for correspondence.
Email: elen@altomira.ru
Russian Federation, Leninskie Gory, Moscow, 119899

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