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Vibration isolation using open or filled trenches

Part 3: 2-D non-homogeneous soil

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Abstract

The problem of isolating structures from surface waves by open or filled trenches under conditions of plane strain is numerically studied. The soil is assumed to be an isotropic, linear elastic or viscoelastic nonhomogeneous (layered) half-space medium. Waves generated by the harmonic motion of a rigid surface machine foundatin are considered. The formulation and solution of the problem are accomplished by the frequency domain boundary element method. The Green's function of Kausel-Peek-Hull for a thin layered half-space is employed and this essentially requires only a discretization of the trench perimeter and the soil-foundation interface. The proposed methodology is used for the solution of a number of vibration isolation problems and the effect of soil inhomogeneity on the wave screening effectiveness of trenches is discussed.

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Authors and Affiliations

  1. Department of Civil and Mineral Engineering, University of Minnesota, 55455, Minneapolis, MN, USA

    K. L. Leung

  2. Department of Civil Engineering, University of Patras, 26110, Patras, Greece

    D. E. Beskos

  3. Department of Civil and Mineral Engineering, University of Minnesota, 55455, Minneapolis, MN, USA

    I. G. Vardoulakis

Authors
  1. K. L. Leung
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  2. D. E. Beskos
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  3. I. G. Vardoulakis
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Additional information

Communicated by S. N. Atluri, December 8, 1989

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Leung, K.L., Beskos, D.E. & Vardoulakis, I.G. Vibration isolation using open or filled trenches. Computational Mechanics 7, 137–148 (1990). https://doi.org/10.1007/BF00375927

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