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The Influence of the Coefficient of Friction on the Elastic Stress Concentration Factor for a Pin-Jointed Connection

Published online by Cambridge University Press:  07 June 2016

T. H. Lambert  and
R. J. Brailey
T. H. Lambert
Affiliation:
Department of Mechanical Engineering, University CollegeLondon
R. J. Brailey
Affiliation:
Department of Mechanical Engineering, University CollegeLondon
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Summary

The benefit to be obtained by using an interference fit between the pin and plate in a pin-jointed connection has already been established. An examination of the published results shows that some non-linearity occurs in the mechanism of load transference from the pin to the plate since, except at very high initial interference, doubling the load on the joint more than doubles the maximum shear stress in the plate. An examination of the stress-load relationship shows a distinct discontinuity, the load at which this discontinuity occurs being dependent upon both the initial interference and the coefficient of friction between the pin and the plate. It is shown that the results hitherto published correspond to a coefficient of friction between the pin and the plate of 0.3 and results for lower and higher coefficients are given.

Type
Research Article
Information
Aeronautical Quarterly , Volume 13 , Issue 1 , February 1962 , pp. 17 - 29
Copyright
Copyright © Royal Aeronautical Society. 1962

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References

1. Jessop, H. T., Snell, C. and Holister, G. S. Photoelastic Investigation with Single Interference-fit Pins with Load Applied (a) to Pin Only and (6) to Pin and Plate Simultaneously. Aeronautical Quarterly, Vol. IX, p. 147, May 1958.Google Scholar
2. Low, A. C. The Fatigue Strength of Pin-jointed Connections in Aluminium Alloy B.S. L.65. Proceedings of the Institution of Mechanical Engineers, Vol. 172, 1958.Google Scholar
3. Lambert, T. H. and Snell, C. Written Contribution to Ref. 2.Google Scholar
4. Frocht, M. M. and Hill, H. N. Stress Concentration Factors Around a Central Circular Hole in a Plate Loaded Through a Pin in the Hole. Transactions of the American Society of Mechanical Engineers. Applied Mechanics, Vol. 62, p. A5, 1940 Google Scholar