Effects of plastic distortion in the lattice curvature zone of a crack tip

Abstract

The paper proposes a discrete-continual method of excitable cellular automata for simulating the stress-strain state at crack tips and in notches with account of lattice curvature and plastic distortion through ion motion from lattice sites to interstices. The proposed nonlinear method allows one to determine the crack type and the character of fracture, to predict the possibility of dynamic rotations and structural turbulence, and to describe the processes of nonlinear wave structural transformations in strain localization bands involved in microporosity and tearing mode cracking.

Original language	English
Pages (from-to)	280-290
Number of pages	11
Journal	Physical Mesomechanics
Volume	20
Issue number	3
DOIs	https://doi.org/10.1134/S1029959917030043
Publication status	Published - 1 Jul 2017

Keywords

cracks
dynamic rotations
fracture
lattice curvature
plastic distortion
singularity
structural turbulence

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Surfaces and Interfaces

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title = "Effects of plastic distortion in the lattice curvature zone of a crack tip",

abstract = "The paper proposes a discrete-continual method of excitable cellular automata for simulating the stress-strain state at crack tips and in notches with account of lattice curvature and plastic distortion through ion motion from lattice sites to interstices. The proposed nonlinear method allows one to determine the crack type and the character of fracture, to predict the possibility of dynamic rotations and structural turbulence, and to describe the processes of nonlinear wave structural transformations in strain localization bands involved in microporosity and tearing mode cracking.",

keywords = "cracks, dynamic rotations, fracture, lattice curvature, plastic distortion, singularity, structural turbulence",

author = "Panin, {V. E.} and Moiseenko, {D. D.} and Maksimov, {P. V.} and Panin, {S. V.}",

year = "2017",

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AU - Panin, V. E.

AU - Moiseenko, D. D.

AU - Maksimov, P. V.

AU - Panin, S. V.

PY - 2017/7/1

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N2 - The paper proposes a discrete-continual method of excitable cellular automata for simulating the stress-strain state at crack tips and in notches with account of lattice curvature and plastic distortion through ion motion from lattice sites to interstices. The proposed nonlinear method allows one to determine the crack type and the character of fracture, to predict the possibility of dynamic rotations and structural turbulence, and to describe the processes of nonlinear wave structural transformations in strain localization bands involved in microporosity and tearing mode cracking.

AB - The paper proposes a discrete-continual method of excitable cellular automata for simulating the stress-strain state at crack tips and in notches with account of lattice curvature and plastic distortion through ion motion from lattice sites to interstices. The proposed nonlinear method allows one to determine the crack type and the character of fracture, to predict the possibility of dynamic rotations and structural turbulence, and to describe the processes of nonlinear wave structural transformations in strain localization bands involved in microporosity and tearing mode cracking.

KW - cracks

KW - dynamic rotations

KW - fracture

KW - lattice curvature

KW - plastic distortion

KW - singularity

KW - structural turbulence

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