Journal
PHYSICAL MESOMECHANICS
Volume 20, Issue 3, Pages 280-290Publisher
SPRINGER
DOI: 10.1134/S1029959917030043
Keywords
fracture; cracks; singularity; lattice curvature; plastic distortion; dynamic rotations; structural turbulence
Funding
- Russian Foundation for Basic Research [17-01-00691]
- Department of Energy, Engineering, Mechanics and Control Processes RAS [1.11.2]
- Russian Federation [NSh-10186.2016.1]
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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.
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