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Behavior of nonlinear fluid viscous dampers for control of shock vibrations

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Title Behavior of nonlinear fluid viscous dampers for control of shock vibrations
 
Creator NARKHEDE, DI
SINHA, R
 
Subject MODEL
 
Description Fluid viscous dampers have been widely used for suppression of high velocity shocks. While linear fluid viscous dampers have been used for a long time, nonlinear fluid viscous dampers show considerable promise due to their superior energy dissipation characteristics and significant reduction in the damper force compared to a linear fluid viscous damper for the same peak displacement. This paper presents results from experimental study to characterize fluid viscous dampers when subjected to half-cycle sine shock excitation. The mathematical formulation and a numerical study to evaluate the relative performance of structures with fluid viscous dampers subjected to short-duration shock (impulse) loading are also discussed. The influence of damper nonlinearity (alpha) and the supplemental damping ratio (xi(sd)) on response has been investigated. The supplemental damping ratio of nonlinear fluid viscous dampers when subjected to shock excitation is found by equivalent linearization using the concept of equal energy dissipation. The paper also presents some design charts, which can be used for preliminary decisions on parameters of nonlinear dampers to be used in design. (C) 2013 Elsevier Ltd. All rights reserved.
 
Publisher ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
 
Date 2014-12-28T11:12:53Z
2014-12-28T11:12:53Z
2014
 
Type Article
 
Identifier JOURNAL OF SOUND AND VIBRATION, 333(1)80-98
0022-460X
1095-8568
http://dx.doi.org/10.1016/j.jsv.2013.08.041
http://dspace.library.iitb.ac.in/jspui/handle/100/16328
 
Language English