Theoretical study of peculiarities of unstable longitudinal shear crack growth in sub-rayleigh and supershear regimes

Evgeny V. Shilko, Sergey G. Psakhie

Division for Materials Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In the paper we present the results of the theoretical study of some fundamental aspects of mode II crack propagation in conventional sub-Rayleigh regime and transition to intersonic regime. It is shown that development of a sub-Rayleigh shear crack is determined in many respects by elastic vortex traveling ahead of the crack tip at a shear wave velocity. Formation of such a vortex helps to better understand the well-known phenomenon of acceleration of a shear crack towards the longitudinal wave velocity. Simulation results have shown that due to self-similarity of shear crack propagation the conditions of sub-Rayleigh to intersonic transition depend on dimensionless material and crack parameters. Two key dimensionless parameters are proposed.

Original language	English
Title of host publication	AIP Conference Proceedings
Publisher	American Institute of Physics Inc.
Pages	571-574
Number of pages	4
Volume	1623
ISBN (Print)	9780735412606
DOIs	https://doi.org/10.1063/1.4901500
Publication status	Published - 2014
Event	International Conference on Physical Mesomechanics of Multilevel Systems 2014 - Tomsk, Russian Federation Duration: 3 Sep 2014 → 5 Sep 2014

Other

Other	International Conference on Physical Mesomechanics of Multilevel Systems 2014
Country	Russian Federation
City	Tomsk
Period	3.9.14 → 5.9.14

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Keywords

Computer-aided simulation
Dynamic mode II fracture
Interface crack
Movable cellular automaton method
Self-similarity
Sub-rayleigh regime
Supershear regime

ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

Shilko, E. V., & Psakhie, S. G. (2014). Theoretical study of peculiarities of unstable longitudinal shear crack growth in sub-rayleigh and supershear regimes. In AIP Conference Proceedings (Vol. 1623, pp. 571-574). American Institute of Physics Inc.. https://doi.org/10.1063/1.4901500

Shilko, EV & Psakhie, SG 2014, Theoretical study of peculiarities of unstable longitudinal shear crack growth in sub-rayleigh and supershear regimes. in AIP Conference Proceedings. vol. 1623, American Institute of Physics Inc., pp. 571-574, International Conference on Physical Mesomechanics of Multilevel Systems 2014, Tomsk, Russian Federation, 3.9.14. https://doi.org/10.1063/1.4901500

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title = "Theoretical study of peculiarities of unstable longitudinal shear crack growth in sub-rayleigh and supershear regimes",

abstract = "In the paper we present the results of the theoretical study of some fundamental aspects of mode II crack propagation in conventional sub-Rayleigh regime and transition to intersonic regime. It is shown that development of a sub-Rayleigh shear crack is determined in many respects by elastic vortex traveling ahead of the crack tip at a shear wave velocity. Formation of such a vortex helps to better understand the well-known phenomenon of acceleration of a shear crack towards the longitudinal wave velocity. Simulation results have shown that due to self-similarity of shear crack propagation the conditions of sub-Rayleigh to intersonic transition depend on dimensionless material and crack parameters. Two key dimensionless parameters are proposed.",

keywords = "Computer-aided simulation, Dynamic mode II fracture, Interface crack, Movable cellular automaton method, Self-similarity, Sub-rayleigh regime, Supershear regime",

author = "Shilko, {Evgeny V.} and Psakhie, {Sergey G.}",

year = "2014",

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language = "English",

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volume = "1623",

pages = "571--574",

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publisher = "American Institute of Physics Inc.",

note = "International Conference on Physical Mesomechanics of Multilevel Systems 2014 ; Conference date: 03-09-2014 Through 05-09-2014",

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AU - Shilko, Evgeny V.

AU - Psakhie, Sergey G.

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N2 - In the paper we present the results of the theoretical study of some fundamental aspects of mode II crack propagation in conventional sub-Rayleigh regime and transition to intersonic regime. It is shown that development of a sub-Rayleigh shear crack is determined in many respects by elastic vortex traveling ahead of the crack tip at a shear wave velocity. Formation of such a vortex helps to better understand the well-known phenomenon of acceleration of a shear crack towards the longitudinal wave velocity. Simulation results have shown that due to self-similarity of shear crack propagation the conditions of sub-Rayleigh to intersonic transition depend on dimensionless material and crack parameters. Two key dimensionless parameters are proposed.

AB - In the paper we present the results of the theoretical study of some fundamental aspects of mode II crack propagation in conventional sub-Rayleigh regime and transition to intersonic regime. It is shown that development of a sub-Rayleigh shear crack is determined in many respects by elastic vortex traveling ahead of the crack tip at a shear wave velocity. Formation of such a vortex helps to better understand the well-known phenomenon of acceleration of a shear crack towards the longitudinal wave velocity. Simulation results have shown that due to self-similarity of shear crack propagation the conditions of sub-Rayleigh to intersonic transition depend on dimensionless material and crack parameters. Two key dimensionless parameters are proposed.

KW - Computer-aided simulation

KW - Dynamic mode II fracture

KW - Interface crack

KW - Movable cellular automaton method

KW - Self-similarity

KW - Sub-rayleigh regime

KW - Supershear regime

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DO - 10.1063/1.4901500

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EP - 574

BT - AIP Conference Proceedings

PB - American Institute of Physics Inc.

T2 - International Conference on Physical Mesomechanics of Multilevel Systems 2014

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Access to Document

10.1063/1.4901500