Kinetic Physical Phenomenological Model of Creep-Rupture Strength of Metals
V. M. Greshnov, R. I. Shaikhutdinov, I. V. Puchkova
Ufa State Aviation Technical University, Ufa, 450000, Russia
Keywords: необратимая деформация, дислокационная ползучесть, вязкое разрушение, структурно-феноменологический подход, длительная прочность, irreversible deformation, dislocation creep, ductile fracture, structural-phenomenological approach, creep-rupture strength
Abstract
A kinetic model of creep-rupture strength is constructed using the physicomathematical theory of irreversible strains of metals. An algorithm for the mathematical modeling of the processes occurring during tension of specimens. Results of experimental verification of a uniaxial model of creep-rupture strength are given. It is shown that the proposed model differs from available models fact in that it contains physical structural parameters (scalar densities of dislocations and microcracks) and kinetic equations for them.
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