Mechanics of Solids (about journal) Mechanics of Solids
A Journal of Russian Academy of Sciences
 Founded
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IssuesArchive of Issues2020-6pp.885-891

Archive of Issues

Total articles in the database: 4918
In Russian (. . ): 2350
In English (Mech. Solids): 2568

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Verveiko N.D., Krupenko S.E., and Shashkin A.I., "Features of Dynamic Deformation of an Elastoviscoplastic Material in the Vicinity of a Moving Crack Tip," Mech. Solids. 55 (6), 885-891 (2020)
Year 2020 Volume 55 Number 6 Pages 885-891
DOI 10.3103/S0025654420060151
Title Features of Dynamic Deformation of an Elastoviscoplastic Material in the Vicinity of a Moving Crack Tip
Author(s) Verveiko N.D. (Voronezh State University, Voronezh, 394018 Russia, verveyko2017@yandex.ru)
Krupenko S.E. (Voronezh State University, Voronezh, 394018 Russia)
Shashkin A.I. (Voronezh State University, Voronezh, 394018 Russia, dean@amm.vsu.ru)
Abstract Some features of the behavior of ideal tips of transverse shear and tear cracks ("shear-tear" crack tips) propagating together with the shear wave fronts are investigated. It is shown that in the quasi-static approximation, the ideally plastic behavior of the material near the tear crack has a spatial character and has characteristic planes oriented at an angle of 45 degrees to the directions of the principal stresses. This makes it possible to interpret the flow of material at the tip of a tear crack as sliding along the faces of regular polygonal pyramids with bases in the tear plane. The leading edge of a "shear-tear" crack, on which both tear and transverse shear occur, in the process of propagation degenerates either into the tip of a tear crack or into the tip of a transverse shear crack. This is due to the fact that the shear or tear of a smaller magnitude reaches its limiting value earlier (stops) and then the tip of the remaining type of crack propagates.
Keywords spatial cracks, material flow, dynamic model, ideal plasticity, Mises model, elastic-viscoplasticity
Received 28 April 2020Revised 15 May 2020Accepted 30 June 2020
Link to Fulltext https://link.springer.com/article/10.3103/S0025654420060151
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