Influence of fracture incubation time on dynamic crack propagation in brittle solids

The paper is devoted to theoretical study of the longitudinal shear (mode II) crack unstable growth dynamics in brittle materials. We considered two main regimes of the dynamic propagation of the crack (sub-Rayleigh and supershear) and their implementation conditions. The research was carried out by...

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Published in:EPJ Web of Conferences 2019, Vol.221, p.1013
Main Authors: Grigoriev, Aleksandr, Shilko, Evgeny
Format: Article
Language:English
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Brittle materials
Cellular automata
Computer simulation
Crack propagation
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description The paper is devoted to theoretical study of the longitudinal shear (mode II) crack unstable growth dynamics in brittle materials. We considered two main regimes of the dynamic propagation of the crack (sub-Rayleigh and supershear) and their implementation conditions. The research was carried out by computer simulation with the Movable Cellular Automaton method, using the generalized kinetic fracture model, which takes into account the finite duration of local fracture (fracture incubation time). It is shown that the fracture incubation time is a key parameter, which determines the transition conditions of the shear crack growth process from the sub-Rayleigh regime to supershear.
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subjects Brittle materials
Cellular automata
Computer simulation
Crack propagation
title Influence of fracture incubation time on dynamic crack propagation in brittle solids
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