Wave Propagation in Transversely Isotropic Fluid-Saturated Poroelastic Media.

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  • LIU Ying
    State Key Laboratory of SAIE, Dalian University of Technology
  • LIU Kaishin
    Department of Mechanics and Engineering Science, Peking University
  • TANIMURA Shinji
    Department of Mechanical Systems Engineering, Aichi University of Technology

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In this paper, stress wave propagation in transversely isotropic fluid-saturated porous media is studied based on Biot's theory with considering of the fluid viscosity. The analytical expressions for speeds and attenuation of plane waves are obtained and the complex characteristic equations and existence condition for general Rayleigh waves are also derived. The propagation characteristic of plane waves and Rayleigh waves in transversely isotropic fluid-saturated porous media is analyzed numerically. The effects of the fluid viscosity and the anisotropy of solid skeleton on the characteristic of stress wave propagation are discussed in detail.

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