This article is cited in 1 paper

Transition of shock-loaded metals to a structurally unstable state

Yu. I. Meshcheryakov^a, N. I. Zhigacheva^a, A. K. Divakov^a, I. P. Makarevich^a, B. K. Barakhtin<sup>b

a</sup> Institute of Problems of Mechanical Engineering, St. Petersburg, 199178, Russia
^b Prometei Central Research Institute of Structural Materials, St. Petersburg

Abstract: The transition of M3 copper to a structurally unstable state was studied in a series of experiments with shock loading under uniaxial deformation conditions. The threshold strain rate was determined at which the motion of the structurally unstable material reaches an equilibrium regime of energy exchange between the mesoscale and the macroscale – the so-called Kolmogorov statistical equilibrium regime. The notions of the representative volume and elementary pulse of energy exchange between the mesoscale and macroscale are introduced. Visualization conditions of localized-shear bands and rotation structures are found by optical, scanning, and transmission electron microscopy.

Keywords: shock wave, structurally unstable state, energy exchange between mesoscale and macroscale, velocity dispersion, velocity defect.

UDC: 539.374

Received: 14.07.2009

 English version: Journal of Applied Mechanics and Technical Physics, 2010, 51:5, 732–743

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