New approach to modeling for multiscale processes in dynamically deformed media

T. A. Khantuleva

doi:10.1117/12.517971

10 October 2003 New approach to modeling for multiscale processes in dynamically deformed media

T. A. Khantuleva

Proceedings Volume 5127, Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (2003) https://doi.org/10.1117/12.517971
Event: Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 2002, St. Petersburg, Russian Federation

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.

Citation Download Citation

T. A. Khantuleva "New approach to modeling for multiscale processes in dynamically deformed media", Proc. SPIE 5127, Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (10 October 2003); https://doi.org/10.1117/12.517971

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