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Numerical simulation of transformation of an obliquely incident shear wave at rock joint

Sebastian, Resmi and Sitharam, TG (2015) Numerical simulation of transformation of an obliquely incident shear wave at rock joint. In: 3rd International Symposium on Geomechanics from Micro to Macro, SEP 01-03, 2014, Univ Cambridge, Cambridge, ENGLAND, pp. 801-805.

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Abstract

An incident energy wave that propagates across discontinuities in rock mass seldom strikes normal to the joint and an oblique incidence leads to transformation of waves. An obliquely incident vertical shear wave will generate a compression wave as well as a vertical shear wave. Similar transformation happens to P wave also during its transmission. The transformation of an obliquely incident shear wave is numerically simulated with the help of previously validated discrete element model. A parametric study on influence of joint shear stiffness on transformation of shear waves is performed for various angles of incidence. It is observed that joint shear stiffness plays an important role in determining wave velocities and amplitudes of transmitted shear waves across various incident angles, but is insignificant for generated P waves. The dependency of wave velocities and amplitudes of waves on incident wave angles is also discussed in this paper.

Item Type: Conference Proceedings
Additional Information: Copy right for this article belongs to the CRC PRESS-TAYLOR & FRANCIS GROUP, 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Id for Latest eprints
Date Deposited: 07 Dec 2016 07:21
Last Modified: 07 Dec 2016 07:21
URI: http://eprints.iisc.ac.in/id/eprint/54800

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