Academic Journal of Engineering and Technology Science, 2024, 7(5); doi: 10.25236/AJETS.2024.070517.
Dechang Hu1, Wei Cai1, Jun Hu1, Tongxing Zhou2, Yangshou Xiong3, Kang Huang4
1China Yangtze River Power Co, Yichang, 443000, China
2Zhihuan Science and Technology Co., Ltd., Hefei, 230601, China
3Anhui Province Key Lab of Aerospace Structural Parts Forming Technology and Equipment, Hefei, 230009, China
4Anhui Key Laboratory of Digit Design and Manufacture, Hefei, 230009, China
Under the condition of grease lubrication, the elastohydrodynamic lubrication (EHL) of steel/plastic gear pair is simulated and analyzed to get the oil film thickness and pressure distribution at the contact point, as well as the influence of rotating speed and load on the friction coefficient. And the change of friction coefficient in the process of meshing is solved. The results are compared with those of steel/steel gear pair. The results show that the oil film of steel/plastic gear pair is thicker than that of steel/steel gear pair, but the pressure is less than that of steel/steel gear pair and there is no secondary pressure peak in the pressure distribution of steel/plastic gear pair. Besides, the friction coefficient increases with the increase of the load and speed, tend to 0 at the pitch point, increase from the meshing-in point to the pitch point, and decrease from the pitch point to the meshing-out point. Under the same load and speed, the friction coefficient of steel/plastic meshing is smaller than that of steel/steel meshing. These conclusions provide a certain theoretical reference for the tribodynamics analysis of steel/plastic gear pairs under grease lubrication conditions.
Grease, Plastic gear, Elastohydrodynamic lubrication, Numerical simulation
Dechang Hu, Wei Cai, Jun Hu, Tongxing Zhou, Yangshou Xiong, Kang Huang. Analysis of Lubrication Characteristics and Friction Coefficient of Steel/Plastic Spur Gear Pair under Grease Lubrication. Academic Journal of Engineering and Technology Science (2024) Vol. 7, Issue 5: 130-139. https://doi.org/10.25236/AJETS.2024.070517.
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