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Abstract

A testing machine has been designed and developed to investigate the performance of a complete journal bearing under a vertical cyclic load of the form P = P₀ + P₁ sin (ω₁t)+ P_n sin (nω₁t + φ). This paper presents the results of the experimental study of the bearing performance for the case where P_n = 0 and for values of P₁/P₀ between infinity and zero inclusive.

Test results show that the ratio of the rate of load application to that of journal rotation (ω₁/ω) is a prime factor in the bearing behaviour. Values of this ratio slightly less than 0.5 give rise to critical changes in the bearing performance, of a character mainly dependent on the ratio of P₁ to P₀.

The results do not, in general, confirm the theory put forward by Swift; they do, however, indicate closer agreement with some recent theoretical studies.

Further work on the subject is proceeding.

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References

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Journal Bearing Performance under Sinusoidally Alternating and Fluctuating Loads

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References