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The Propagation of Elastic Disturbances in a Medium with Large Irreversible Preliminary Strains

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Abstract

General theoretical relations for calculating the redistribution of the preliminary irreversible strain field during unloading or elastic loading of a medium are obtained for the nonlinear multiplicative gradient model of large elastic–plastic deformations. It is shown that the dynamics of elastic shock waves does not depend directly on the previously accumulated plastic strains. A formula for the plastic-strain rotation tensor is obtained. It is shown that rigid rotation of plastic strains under elastic shock waves can be jump-like. All results are obtained for the general case of model relations of isotropic media and are valid for both compressible and incompressible materials.

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Authors and Affiliations

  1. Institute of Automation and Control Processes, Far East Branch, Russian Academy of Sciences, 690041, Vladivostok, Russia

    Yu. N. Kulchin, V. E. Ragozina & O. V. Dudko

Authors
  1. Yu. N. Kulchin
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  2. V. E. Ragozina
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  3. O. V. Dudko
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Corresponding author

Correspondence to O. V. Dudko.

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Translated by A. Sin’kov

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Kulchin, Y.N., Ragozina, V.E. & Dudko, O.V. The Propagation of Elastic Disturbances in a Medium with Large Irreversible Preliminary Strains. Dokl. Phys. 64, 74–76 (2019). https://doi.org/10.1134/S1028335819020058

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  • DOI: https://doi.org/10.1134/S1028335819020058

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