Journal of Siberian Federal University. Mathematics & Physics / Explicit-Implicit Schemes for Calculating the Dynamics of Layered Media with Nonlinear Conditions at Contact Boundaries

Full text (.pdf)
Issue
Journal of Siberian Federal University. Mathematics & Physics. 2021 14 (6)
Authors
Nikitin, Ilia S.; Golubev, Vasily I.
Contact information
Nikitin, Ilia S.: Institute of Computer Aided Design RAS Moscow, Russian Federation; OCRID: 0000-0003-3499-6910; Golubev, Vasily I.: Moscow Institute of Physics and Technology (National Research University) Moscow Region, Russian Federation; , OCRID: 0000-0003-3113-7299
Keywords
layered media; fractured media; numerical simulation; explicit-implicit method; grid-characteristic method; slip conditions
Abstract

In this paper we consider the problem of dynamic loading of a deformable solid medium con- taining slip planes with nonlinear slip conditions on them. An explicit-implicit scheme was constructed for the numerical solution of the constitutive system of equations, which exactly reduces to correcting the stress tensor values after performing the elastic step. An implicit approximation of the constitutive relations containing a small parameter in the denominator of the nonlinear free term was used with the second order of the approximation. The correction procedure is applicable for those cases when the viscosity parameter of interlayers providing the sliding mode of the contact boundaries is not small. The solution of the problem of the seismic waves propagation in an inhomogeneous fractured geological massif in a two-dimensional case was obtained numerically

Pages
768–778
DOI
10.17516/1997-1397-2021-14-6-768-778
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/144769