Wave propagation across the imperfectly bonded interface between cracked elastic solid and porous solid saturated with two immiscible viscous fluids. (1st December 2015)

• Record Type: Journal Article
• Authors: Shekhar, Sushant; Parvez, Imtiyaz A.
• Is Part Of: International journal of solids and structures. Volume 75/76(2015)
• Page Start: 299
• Page End: 308
• Publication Date: 2015-12-01
• Subjects: Reflection and refraction -- Energy partition -- Seismic attenuation -- Cracked elastic solid -- Saturated porous solid; Mechanics, Applied -- Periodicals; Structural analysis (Engineering) -- Periodicals; Elastic solids -- Periodicals; Mécanique appliquée -- Périodiques; Constructions, Théorie des -- Périodiques; Solides élastiques -- Périodiques; Elastic solids; Mechanics, Applied; Structural analysis (Engineering); Periodicals; 624.18
• DOI: 10.1016/j.ijsolstr.2015.08.022
• Languages: English
• ISSNs: 0020-7683

Abstract

Highlights: Our results successfully satisfy the conservation of energy. Here, effect of loose boundary has been shown in the form of dissipated energy. Significant effect of the presence of aligned cracks has been found on the energy shares of the reflected and refracted waves. Abstract: The present study is aimed at understanding the effect of a vertically aligned crack, present in the elastic half space on the propagation of attenuated waves. These waves are incident at a point on the interface between the porous half space and the cracked elastic half space. The analysis is based on Snell's law for reflection and refraction of an incident wave at the interface. A loose bonding at the interface between the porous half space and the cracked elastic half space has been considered and represented here as the tangential slip. The proposed model is solved for the propagation of harmonic plane waves. The final equations are in the form of Christoffel equations from which we find four reflected waves (three longitudinal body waves and one transverse body wave) and two refracted waves (one longitudinal body wave and one transverse body wave). The expression of reflection–refraction coefficients and energy share of each reflected and refracted waves for a given incident wave is obtained in closed form and computed numerically in the present study. Numerical examples are considered for the partition of the incident energy in which we have studied the effect of aspect ratio, crack density and loose bonding parameter.