Influence of Boundary Conditions on Damping Properties of Fluid-Saturatedporous Materials
The object of this paper is the analysis of damping properties of elastic porous media filled with a viscous fluid and, in particular, examination of the influence of boundary conditions and material constants of the medium on the effect of damping. The problem is illustrated by an example of damped vibrations of a fluid-saturated porous cylinder. The attention is concentrated on the analysis of the damping coefficient and the dependence of this coefficient on the boundary conditions and the material constants. The examples analysed show that there exists a broad possibility of controlling this coefficient by a suitable choice of the material constants and the boundary conditions.
S.J.KOWALSKI, R.KUC and G.MUSIELAK, Analysis of damping properties of perforated deformable media [in Polish], Rozpr. Inż., 37, 4, 1989.
S.J.KOWALSKI, R.KUC and G.MUSIELAK, Analysis of vibration-isolation properties of fluid-filled perforated media [in Polish], Rozpr. Inż., 36, 3, 1988.
S.J.KOWALSKI, Vibration of porous cylinder with fluid [in Polish], 26, 4, 1979.
M.A.BIOT, Theory of propagation of elastic waves in a fluid-saturated porous solid, I. Low-frequency range, J. Acoust. Soc. Am., 28, 2, 1956.
J.M.A.BIOT AND D.G.WILLIS, The elastic coefficients of the theory of consolidation, J.Appl.Mech.,24, 594-601, 1957.
Copyright © 2014 by Institute of Fundamental Technological Research
Polish Academy of Sciences, Warsaw, Poland