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Simulation of dynamic processes in three-dimensional layered fractured media with the use of the grid-characteristic numerical method

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Abstract

This paper touches upon the computer simulation of the propagation of elastic waves in three-dimensional multilayer fractured media. The dynamic processes are described using the defining system of equations in the partial derivatives of the deformed solid mechanics. The numerical solution of this system is carried out via the grid-characteristic method on curvilinear structural grids. The fractured nature of the medium is accounted for by explicitly selecting the boundaries of individual cracks and setting special boundary conditions in them. Various models of heterogeneous deformed media with a fractured structures are considered: a homogeneous medium, a medium with horizontal boundaries, a medium with inclined boundaries, and a medium curvilinear boundaries. The wave fields detected on the surface are obtained, and their structures are analyzed. It is demonstrated that it is possible to detect the waves scattered from fractured media even in the case of nonparallel (inclined and curvilinear) boundaries of geological layers.

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Correspondence to V. I. Golubev.

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Original Russian Text © V.I. Golubev, R.I. Gilyazutdinov, I.B. Petrov, N.I. Khokhlov, A.V. Vasyukov.

Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 58, No. 3, pp. 190–197, May–June, 2017.

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Golubev, V.I., Gilyazutdinov, R.I., Petrov, I.B. et al. Simulation of dynamic processes in three-dimensional layered fractured media with the use of the grid-characteristic numerical method. J Appl Mech Tech Phy 58, 539–545 (2017). https://doi.org/10.1134/S0021894417030191

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  • DOI: https://doi.org/10.1134/S0021894417030191

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