摘要
应用COMSOL Multiphysics对考虑弹性变形和黏压黏温效应的推力滑动轴承建立有限元模型,并进行数值仿真模拟。结果表明:初始入油温度的增大使润滑油黏度迅速下降,但对油膜压力影响很小;载荷的增大使油膜压力增大明显,油膜压力峰值向出口区移动,在轴瓦上产生较大变形;转动速度的增大使油膜厚度增加,有利于产生流体动压,但摩擦功率损失很大;存在使油膜压力峰值最小,且压力分布均匀的最佳倾斜角。
Considering the elastic deformation and the viscosity and density changing with pressure and temperature, a finite element model for sliding thrust bearing was established by COMSOL Muhiphysics. The numerical simulation results show that the increase of initial oil＇ s temperature results the rapid decrease of viscosity, but it has little impact on the oil film pressure. The increase of load makes the oil film pressure increase obviously and pressure peak value move towards the export zones, and large deformation is formed in the export zones. With the increase of rotation speed, the oil film thickness is increased ,which is helpful to produce the hydrodynamic pressure, but the friction power loss is increased. There is an optimum incline angle which can make the oil film pressure peak the least and the oil film pressure distribution more uniform.
出处
《润滑与密封》
CAS
CSCD
北大核心
2014年第1期73-79,共7页
Lubrication Engineering
关键词
推力滑动轴承
弹性变形
倾斜角
油膜压力
thrust sliding bearing
elastic deformation
incline angle
oil film pressure
