Active Vibration Isolation by Open and In-filled Trenches: A Comparative Study

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ID: 13869
2016
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Abstract
Active isolation of steady-state surface vibrations by open and softer in-filled trenches in an elastic and homogeneous half-space is investigated in this study using PLAXIS 2D. Percentage isolation by barrier is estimated from amplitude reduction factors. Effects of in-fill material parameters are investigated in terms of impedance ratios against the case of a trench of definite geometry. Several cases of softer backfilled trenches with impedance ratios ranging from 0.08-0.42 are studied and their effectiveness is compared with that of an open trench of identical dimension. It is found that softer in-filled trench barriers of impedance ratios lying between 0.08-0.17 exhibit isolation effectiveness comparable to open trenches. Isolation efficiency of in-filled trenches increases with decrease in impedance ratio. Both open and in-filled trenches are found more effective in reducing the vertical vibration component than the horizontal. Keywords:vibration isolation, in-filled trench, impedance ratio, Rayleigh wavelength
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saikia2016activeadbu Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Ankurjyoti Saikia;
Journal adbu journal of engineering technology
Year 2016
DOI
DOI not found
URL
http://journals.dbuniversity.ac.in/ojs/index.php/AJET/article/download/168/pdf_27
Keywords Keywords not found

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