A Wavelet Approach for the Analysis of Bending Waves in a Beam on Viscoelastic Random Foundation


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This paper deals with the mathematical model of dynamic behaviour of a beam resting on viscoelastic random foundation for which the modulus of subgrade reaction is assumed to be a homogeneous random function of the space variable. An approximate analytical solution for the fourth-order differential equation with random parameters is obtained in the case of a ∞ C -class correlation function. This higher order regularity of correlation function implies the regularity of associated stochastic function [1] in the sense of the mean-square analysis [2]. The numerical results for the average displacement have been obtained by using Bourret’s approximation method. A special method of finding inverse Laplace transform based on the wavelet theory is adopted and used in the numerical examples.



Edited by:

Patrick Sean Keogh




P. Koziol et al., "A Wavelet Approach for the Analysis of Bending Waves in a Beam on Viscoelastic Random Foundation", Applied Mechanics and Materials, Vols. 5-6, pp. 239-246, 2006

Online since:

October 2006




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