TY - JOUR

T1 - New approach to modeling for multiscale processes in dynamically deformed media

AU - Khantuleva, T. A.

PY - 2002/12/1

Y1 - 2002/12/1

N2 - 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 formulated as a nonlinear operator set with the branching solutions for the mesostructure parameters determining sizes and types (rotational or translational) of mesostructure. These 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.

AB - 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 formulated as a nonlinear operator set with the branching solutions for the mesostructure parameters determining sizes and types (rotational or translational) of mesostructure. These 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.

UR - http://www.scopus.com/inward/record.url?scp=1642433305&partnerID=8YFLogxK

U2 - 10.1117/12.517971

DO - 10.1117/12.517971

M3 - Article

AN - SCOPUS:1642433305

VL - 5127

SP - 189

EP - 196

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

ER -