Email this article Mesoscale plastic flow instability in a solid under high-rate deformation
- Authors: Khantuleva T.A.1, Meshcheryakov Y.I.2
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Affiliations:
- Saint Petersburg University
- Institute of Problems of Mechanical Engineering
- Issue: Vol 20, No 4 (2017)
- Pages: 417-424
- Section: Article
- URL: https://journals.rcsi.science/1029-9599/article/view/191773
- DOI: https://doi.org/10.1134/S1029959917040063
- ID: 191773
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Abstract
Here we consider high-rate deformation in solids in the context of a nonlocal transport theory, present a dynamic stress-strain diagram with elastic and plastic portions defined from a single standpoint, determine the conditions for pulse stress accumulation, and propose a mathematical model of momentum and energy exchange between scales and an instability criterion for transient plastic flow under shock loading. Phe instability criterion for high-rate deformation is verified by the example of shock loading of high-strength 30CrNi4Mo steel.
About the authors
T. A. Khantuleva
Saint Petersburg University
Author for correspondence.
Email: khan47@mail.ru
Russian Federation, St. Petersburg, 199034
Yu. I. Meshcheryakov
Institute of Problems of Mechanical Engineering
Email: khan47@mail.ru
Russian Federation, St. Petersburg, 199178
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