不同基载液齿轮磁流体润滑与动力学耦合研究  

Coupling Research on Lubrication and Gear Dynamics Under Different-carrier Ferrofluids

作　　者：任丰兰[1,2] 魏坤 菅光霄 王优强 Ren Fenglan;Wei Kun;Jian Guangxiao;Wang Youqiang(Department of Mechanical and Electrical Engineering,Changde Vocational Technical College,Changde 415000,China;School of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China;School of Machinery and Power Engineering,China Three Gorges University,Yichang 443002,China;School of Mechanical Automotive Engineering,Qingdao University of Technology,Qingdao 266520,China)

机构地区：[1]常德职业技术学院机电系,湖南常德415000 [2]中南大学机电工程学院,湖南长沙410083 [3]三峡大学机械与动力学院,湖北宜昌443002 [4]青岛理工大学机械与汽车工程学院,山东青岛266520

出　　处：《机械传动》2022年第12期45-52,共8页Journal of Mechanical Transmission

基　　金：湖南省“十四五”规划项目(ND211005);国家自然科学基金(51975324)。

摘　　要：为了探究不同基载液磁流体对齿轮润滑与动力学的耦合效应,建立齿轮动力学与磁流体润滑耦合模型及油膜刚度模型,基于4阶的Runge-Kutta法、多重网格法和多重网格积分法,分析了不同基载液磁流体对齿面成膜特性及动载荷分布的影响。研究结果表明,改变磁流体基载液,适当增大磁流体黏度,可以改善齿面的成膜特性;其主要体现为轮齿间油膜厚度和油膜刚度的增大以及动载荷下油膜压力和油膜厚度振幅的减小。磁流体的黏度增大时,齿轮系统的综合刚度增大,动态传递误差和齿轮副振动速度减小,动载荷的振幅减小,冲击载荷得到抑制,齿轮系统的动力学特性和NVH(Noise Vibration Harshness)性能得到提高。In order to explore the coupling effect of ferrofluids with different carriers on lubrication and gear dynamics,the dynamic model and the ferrofluid lubrication model of the gear system are established.Based on the fourth order Runge-Kutta method,the multi-grid method and multi-grid integration method,the influence of different-carrier ferrofluids on oil film and the distribution of dynamic loads are analyzed.The results show that the film forming characteristics of tooth surfaces can be improved by changing the magnetic fluid base carrier and increasing the magnetic fluid viscosity appropriately.It is mainly reflected in the increase of oil film thickness and stiffness between gear teeth and the decrease of oil film pressure and amplitude of oil film thickness under dynamic loads.When the viscosity of the magnetic fluid increases,the comprehensive stiffness of the gear system also increases.On the contrary,when the vibration speed of the gear pair and the amplitude of the dynamic loads decreased,the impact loads are eventually suppressed,and the dynamic characteristics and NVH(Noise Vibration Harshness)performance of the gear system are improved consequently.

关 键 词：磁流体润滑 齿轮动力学模型 综合刚度 动载荷 

分 类 号：TH132.41[机械工程—机械制造及自动化] TH117.2