ANALYTICAL SOLUTIONS FOR DYNAMIC PRESSURES OF COUPLING FLUID-SOLID-POROUS MEDIUM DUE TO P WAVE INCIDENCE

Wave reflection and refraction in layered media is a topic closely related to seismology, acoustics, geophysics and earthquake engineering. This article reports on a study in which analytical solutions for wave reflection and refraction coefficients in multi-layered media subjected to P wave incidence from the elastic half-space are derived in terms of displacement potentials. The system is composed of ideal fluid, porous medium, and underlying elastic solid. The effects of porous medium and the incident wave angle on the dynamic pressures of ideal fluid are analyzed numerically. The results show that the existence of the porous medium, especially in the partially saturated case, may significantly affect the dynamic pressures of the overlying fluid. The existence of a fully saturated porous medium layer slightly decreases the response peaks of the dynamic pressures of the overlying fluid and increases the natural frequencies of the system. When the porous medium layer is partially saturated, the response peaks of the dynamic pressures in the fluid increase significantly, and the natural frequencies of the system shift to the lower side. When the incident wave angles become larger, the dynamic pressure gradually decreases.

  • Availability:
  • Corporate Authors:

    Science Press

    Beijing 100707,   China 
  • Authors:
    • Jinting, W
    • Chuhan, Z
    • Feng, J
  • Publication Date: 2004-12

Language

  • English

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Filing Info

  • Accession Number: 00989059
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 2 2005 12:00AM