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Dynamics of mechanical action on materials. IX. Preset movement of a system

  • Physicochemical and Structural Investigations of Materials
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Powder Metallurgy and Metal Ceramics Aims and scope

Abstract

The dynamics of an open mechanical dissipative system involving a viscoelastic strain hardenable body above and below its elastic limit is considered when the force generated with movement is governed by the kinematics of a machine with preset movement. The dynamic origin is clarified for the nonlinear part of the tensile curve beyond the elastic limit for a viscoelastic body to which “nonliear elasticity” is attributed. It is demonstrated that it arises as a result, a transient relaxation process. On completion of this process a force is established within the system governed by viscous flow of the body and corresponding to its yield point. As a result of the change in controlling parameters and the effect of a delay a bistable state arises for the system beyond the elastic limit leading to its macroscopic acoustic activity.

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Authors
  1. M. S. Koval’chenko
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Additional information

Institute for Problems of Materials Science, Ukraine National Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 9–10(409), pp. 89–96, September–October, 1999.

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Koval’chenko, M.S. Dynamics of mechanical action on materials. IX. Preset movement of a system. Powder Metall Met Ceram 38, 505–510 (1999). https://doi.org/10.1007/BF02676069

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  • DOI: https://doi.org/10.1007/BF02676069

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