Elastoplastic Model of Rocks with a Linear Structural Parameter
A. F. Revuzhenko, O. A. Mikenina
Mining Institute, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Keywords: горная порода, упругость, пластичность, самоуравновешенные напряжения, структурный параметр, rocks, elasticity, plasticity, self-balanced stresses, structural parameter
Abstract
A closed mathematical model is formulated, which takes into account elastoplastic deformations and the medium capability of accumulating the energy of internal self-balanced stresses. Satisfaction of the diffeomorphism postulate (assumption of displacement field smoothness) is not required; as a result, the strains depend on the stresses and second derivatives of the stresses with respect to the coordinates. The model involves a linear structural parameter. Relations that take into account local bending of the elementary volumes of the medium are derived.
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