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A Note on the Excitation of Vibrating Systems by Gearing Errors

Published online by Cambridge University Press:  28 July 2016

D. C. Johnson  and
R. E. D. Bishop
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Extract

In a recent paper, Yates has shown that it is convenient to distinguish between two main types of stimulus which induce torsional vibration in geared-shaft systems. The first, which is dealt with in detail in the literature, is “force excitation” by which periodic torques act upon the system and throw it into oscillation; for the purpose of this note, it will be convenient to refer to a previous article as dealing with this problem.

The second type of excitation to which Yates refers is “displacement excitation.” It may be thought of as arising from errors in the cutting of gears which cause periodic variations in the velocity ratio of mating components. A Hooke's joint which couples two rotating systems which are capable of torsional oscillation would give rise to this form of stimulus.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 59 , Issue 534 , June 1955 , pp. 434 - 435
Copyright
Copyright © Royal Aeronautical Society 1955

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References

1. Yates, H. G. (1955). Prediction and Measurement of Vibration in Marine Geared-Shaft Systems. Paper presented to the Institution of Mechanical Engineers, April 1955.Google Scholar
2. Bishop, R. E. D. (1954). The Analysis and Synthesis of Vibrating Systems. Journal of the Royal Aeronautical Society, October 1954.Google Scholar
3. Duncan, W. J. (1947). Mechanical Admittances and their Applications to Oscillation Problems. R. & M. 2000, 1947.Google Scholar