|
Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2010, Volume 51, Issue 5, Pages 132–146
(Mi pmtf1648)
|
|
|
|
This article is cited in 1 scientific paper (total in 1 paper)
Transition of shock-loaded metals to a structurally unstable state
Yu. I. Meshcheryakova, N. I. Zhigachevaa, A. K. Divakova, I. P. Makarevicha, B. K. Barakhtinb a 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.
Received: 14.07.2009
Citation:
Yu. I. Meshcheryakov, N. I. Zhigacheva, A. K. Divakov, I. P. Makarevich, B. K. Barakhtin, “Transition of shock-loaded metals to a structurally unstable state”, Prikl. Mekh. Tekh. Fiz., 51:5 (2010), 132–146; J. Appl. Mech. Tech. Phys., 51:5 (2010), 732–743
Linking options:
https://www.mathnet.ru/eng/pmtf1648 https://www.mathnet.ru/eng/pmtf/v51/i5/p132
|
|