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Proceedings Paper

New approach to modeling for multiscale processes in dynamically deformed media
Author(s): T. A. Khantuleva
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Paper Abstract

The stress relaxation during the high-rate straining of materials is followed by the energy exchange between macroscopic and mesoscopic scale levels. A correct description of the shock wave propagation in relaxing medium involving the experimentally measured mesoscopic characteristics such as the mass velocity dispersion and the wave amplitude loss on account of irreversible mesostructure formation had been developed on the basis of a new self-consistent non-local hydrodynamic approach. In scope of this theory the problem of the non-steady shock wave propagation in semi-space had been forumulated as a nonlinear operator set with the branching solutions for the mesostructures are responsible for the dynamic behavior of solids as new carriers of deformation. During the stationary wave propagation the macro-meso-energy exchange inside the wave front is reversible. The structure transition to irreversible mesostructures, when medium properties behind the front are considerably changed, can result in a failure of materials.

Paper Details

Date Published: 10 October 2003
PDF: 8 pages
Proc. SPIE 5127, Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (10 October 2003); doi: 10.1117/12.517971
Show Author Affiliations
T. A. Khantuleva, St. Petersburg State Technical Univ. (Russia)


Published in SPIE Proceedings Vol. 5127:
Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering
Alexander I. Melker, Editor(s)

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