Shear wave propagation in magneto poroelastic medium sandwiched between self-reinforced poroelastic medium and poroelastic half space
ISSN: 0264-4401
Article publication date: 25 June 2020
Issue publication date: 28 October 2020
Abstract
Purpose
The purpose of this paper is to investigate the effect of reinforcement, inhomogeneity and initial stress on the propagation of shear waves. The problem consists of magneto poroelastic medium sandwiched between self-reinforced medium and poroelastic half space. Using Biot’s theory of wave propagation, the frequency equation is obtained.
Design/methodology/approach
Shear wave propagation in magneto poroelastic medium embedded between a self-reinforced medium and poroelastic half space is investigated. This particular setup is quite possible in the Earth crust. All the three media are assumed to be inhomogeneous under initial stress. The significant effects of initial stress and inhomogeneity parameters of individual media have been studied.
Findings
Phase velocity is computed against wavenumber for various values of self-reinforcement, heterogeneity parameter and initial stress. Classical elasticity results are deduced as a particular case of the present study. Also in the absence of inhomogeneity and initial stress, frequency equation is discussed. Graphical representation is made to exhibit the results.
Originality/value
Shear wave propagation in magneto poroelastic medium embedded between a self-reinforced medium, and poroelastic half space are investigated in presence of initial stress, and inhomogeneity parameter. For heterogeneous poroelastic half space, the Whittaker’s solution is obtained. From the numerical results, it is observed that heterogeneity parameter, inhomogeneity parameter and reinforcement parameter have significant influences on the wave characteristics. In addition, frequency equation is discussed in absence of inhomogeneity and initial stress. For the validation purpose, numerical results are also computed for a particular case.
Keywords
Acknowledgements
Corrigendum: It has come to the attention of the publisher that the article, Ala, S., Gurijala, R. and Perati, M.R. (2020), “Shear wave propagation in magneto poroelastic medium sandwiched between self-reinforced poroelastic medium and poroelastic half space”, Engineering Computations, contained an error in Eq. (25). This error was introduced in the production process and have now been corrected online.
Authors acknowledge Department of Science and Technology (DST) for funding through Fund for Improvement of S&T Infrastructure (FIST) program sanctioned to the Department of Mathematics, Kakatiya University, Warangal with File No. SR/FST/MSI-101/2014. One of the authors Rajitha Gurijala acknowledges University Grants Commission (UGC), Government of India, for its financial support through the Postdoctoral Fellowship for Women (Grant Number F.15–1/2015–17/PDFWM-2015–17-TEL-34525 (SA-II)).
Citation
Ala, S., Gurijala, R. and Perati, M.R. (2020), "Shear wave propagation in magneto poroelastic medium sandwiched between self-reinforced poroelastic medium and poroelastic half space", Engineering Computations, Vol. 37 No. 9, pp. 3345-3359. https://doi.org/10.1108/EC-11-2019-0505
Publisher
:Emerald Publishing Limited
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