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On the Determination of the Dynamic Characteristics of a Vibrating System

Published online by Cambridge University Press:  04 July 2016

S. Mahalingam
S. Mahalingam*
Affiliation:
Department of Mechanical Engineering, University of Ceylon, Peradeniya, Ceylon
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Extract

The natural frequencies and modes of vibration of a structure may be obtained more or less directly from experiments. The generalised masses and stiffnesses, however, are usually obtained indirectly from experimental investigations of the dynamic behaviour of the system. One of the techniques widely used for this purpose in the aircraft industry is known as the method of displaced frequenciesm.Stated briefly, the method consists of observing the changes in the natural frequencies caused by the addition of one or more small masses to the vibrating system.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 71 , Issue 683 , December 1967 , pp. 793 - 796
Copyright
Copyright © Royal Aeronautical Society 1967

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References

1.Leclerc, J.Modification of the Shape of a Structure by the Addition of Small Masses. La Recherche Aeronautique, No 50, p 45, 1956.Google Scholar
2.Simpson, A.An Improved Displaced Frequency Method for the Estimation of Dynamical Characteristics of Mechanical Systems. Journal of the Royal Aeronautical Society, Vol 70, p 661, 1966.Google Scholar
3.Collar, A. R.Some Notes on Jahn's Method for the Improvement of Approximate Latent Roots and Vectors of a Square Matrix. Quart J Mech App Math, Vol 1, p 145, 1948.Google Scholar
4.Jones, R. P. N. and Mahalingam, S.The Natural Frequencies of Free and Constrained Non-Uniform Beams. Journal of the Royal Aeronautical Society, Vol 64, p 697, 1960.Google Scholar
5.Bishop, R. E. D. and Johnson, D. C.The Mechanics of Vibration. Cambridge University Press, 1960.Google Scholar
6.Gladwell, G. M. L.A Refined Estimate for the Damping Coefficient. Journal of the Royal Aeronautical Society, Vol 66, p 124, 1962.Google Scholar
7.Mahalingam, S.On the Method of Displaced Frequencies in Vibration Analysis. J Mech Engng Sci, Vol 7, p 391, 1965.Google Scholar