海水润滑赛龙轴承热弹流润滑理论分析

Thermal Elastohydrodynamic Lubrication Analysis of Seawaterlubricated Thordon Bearing

利用Reynolds方程,对海水润滑条件下赛龙轴承在考虑热效应时的弹流润滑问题进行数值模拟,讨论载荷、转速和轴承轴径大小对海水润滑膜压力及膜厚的影响。结果表明:热效应对于水膜压力影响很小,而考虑热效应时的膜厚会有所减小;随载荷的增大,压力峰值有所增大,膜厚随载荷的增大有明显的减小;随转速的增大压力峰值减小,而膜厚随转速的增大而有明显的增大;轴径的大小对于水膜压力和膜厚的大小影响不明显。

Based on Reynolds equation, the numerical simulation of thermal elstohydronamic lubrication for seawater-lu- bricated thordon bearing was made, the effects of load, speed and shaft diameter on the pressure and film thickness of Thor- don bearing were discussed. The results show that thermal effect has little effect on the pressure, but the film thickness is smaller under the thermal condition. The pressure peak is increased and the film thickness is decreased greatly with the increase of load. The pressure peak is decreased and the film thickness is increased greatly with the increase of speed. The shaft diameter has insignificant effect on the pressure and film thickness