Friction and Vibration in Journal Bearings Operating with Nanofluids: Experimental Results
The article considers the influence of nanoadditives on the performance characteristics of radial slide bearings. The samples of lubricants were prepared on the basis of mineral oil with additives of fullerene soot and a mixture of fullerenes with a total mass fraction of not more than 0.01%. In the run-out mode, data were obtained on the rotational speed and vibro-displacement of the rotor, vibration acceleration of the bearing housing. Based on the results of the experimental data processing, Stribeck curves and trajectories and amplitude–frequency characteristics of the oscillations are constructed. The results showed a decrease in friction in bearing supports when using oils with additives. At the same time, the effect on the rotor vibration level was insignificant. The best results were shown by the addition of fullerene soot.
KeywordsLubricant additive Journal bearing Amplitude–frequency response Rotor center trajectory
This work was supported by the Russian Science Foundation under Project no. 16-19-00186 (formulation and solution of the problem in all sections of the present paper) and by the Ministry of Education and Science of the Russian Federation under Project no. 9.2952.2017/4.6 (development and modernization of the test rig). The authors gratefully acknowledge this support. The author also expresses graduate to organizing committee of the conference “Industrial Engineering” (I Moscow Polytechnic University, Moscow, May 15–18, 2018) for the possibility to publish this article in “Lecture Notes in Mechanical Engineering”.
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