Free vibration analysis Of stochastic strings

Manohar, CS and Iyengar, Rn (1994) Free vibration analysis Of stochastic strings. In: Journal of sound and vibration, 176 (1). 35-48 .

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Abstract

The free vibration of strings with randomly varying mass and stiffness is considered. The joint probability density functions of the eigenvalues and eigenfunctions are characterized in terms of the solution of a pair of stochastic non-linear initial value problems. Analytical solutions of these equations based on the method of stochastic averaging are obtained. The effects of the mean and autocorrelation of the mass process are included in the analysis. Numerical results for the marginal probability density functions of eigenvalues and eigenfunctions are obtained and are found to compare well with Monte Carlo simulation results. The random eigenvalues, when normalized with respect to their corresponding deterministic values, are observed to tend to become first order stochastically stationary with respect to the mode count.

Item Type:	Journal Article
Publication:	Journal of sound and vibration
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	27 May 2011 06:33
Last Modified:	27 May 2011 06:33
URI:	http://eprints.iisc.ac.in/id/eprint/36492

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