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GROUND VIBRATION IN THE VICINITY OF A RECTANGULAR LOAD ACTING ON A VISCOELASTIC LAYER OVER A RIGID FOUNDATION

✍ Scribed by D.V. Jones; O. Laghrouche; D. Le Houedec; M. Petyt

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 442 KB
Volume: 203
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1996.0899

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✦ Synopsis

The transmission of vibrations in the vicinity of a rectangular harmonic vertical load, acting on a viscoelastic layer overlaying a rigid half-space, is investigated theoretically, using a semi-analytic approach. The solution involves a double Fourier transform with respect to two of the space variables of Navier's elastodynamic equations. The inverse double Fourier transform is achieved with the FFT algorithm. Results presented include transformed displacements in the wavenumber domain, actual displacements in the near-field of the load, and the direct receptance at the load.

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The transmission of vibrations over the surface of the ground, due to a high-speed moving, vertical harmonic strip load, is investigated theoretically. Consequently, the problem is essentially two-dimensional and the interior of the ground is modelled as an elastic half-space. The transformed soluti