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Analysis on propagation characteristics of the shear wave in a triple layered concentric infinite long cylindrical structure: An analytical approach

  • Pulkit Kumar
  • Amares Chattopadhyay
  • Moumita MahantyEmail author
  • Abhishek Kumar Singh
Regular Article
  • 24 Downloads

Abstract.

The present work delves into the propagation of a horizontally polarised shear (SH) wave in an infinitely long cylindrical structure comprised of three concentric isotropic layered media. The model has been formulated in cylindrical co-ordinates and an analytical approach is employed to achieve the closed form of the dispersion relation. The application of the Debye Asymptotic Analysis to tackle the complexity arisen due to the involvement of Hankel’s function in the solution treatment is one of the key features of the present article. With the aid of the Debye Asymptotic Analysis, the dispersion equation is shown to be in well agreement with the classical Love wave equation in the absence of the outermost layer medium. The present analysis highlights the influence of the wave number and various radii ratios of the concentric cylindrical layered elastic medium on the phase velocity of the shear wave propagating in the embraced structure. Numerical computations have been carried out to accomplish the graphical demonstration unravelling some important peculiarities associated with the propagation characteristics of the shear wave in the considered cylindrical structure.

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Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Applied MathematicsIndian Institute of Technology (Indian School of Mines)DhanbadIndia

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