摘要
结合圆柱直齿轮承载特性和齿面线接触非牛顿流体的时变热弹流润滑分析,建立了齿轮润滑承载接触模型,从而形成润滑状态下渐开线圆柱齿轮摩擦效率的精确计算方法。通过齿轮承载特性分析,获得啮合周期内轮齿各瞬时离散接触点载荷等动力参数。利用多重网格法和逐列扫描的方法交替求解线接触瞬态微观热弹流润滑模型,最终求得的滑动摩擦效率。结果表明:当载荷变化较小时,其对滑动摩擦系数和瞬时摩擦功率损失影响较小,而载荷发生突增时,摩擦系数将随之减小。
This paper combines the thermal elastic hydrodynamic lubrication( TEHL) analysis with the loaded tooth contact analysis( LTCA) to predict the slide friction efficiency of the spur gear. LTCA is used to calculate the normal load and kinematics of the discrete contact points for the TEHL. The multi-level method,multi-level multiintegration( MIMI) approach and the sequential column sweeping for solving the pressure,elastic deformation and the temperature of the lubricated regions are used alternatively. The results show that when the change of tooth load is small,the effect of the load to the friction coefficient can be ignored; but the larger increase of the load will lead to reduced friction coefficient.
出处
《机械科学与技术》
CSCD
北大核心
2015年第3期329-333,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(51075328)资助
关键词
摩擦效率
润滑承载接触分析
多重网格法
直齿轮
boundary conditions
elastic deformation
film thickness
flowcharting
friction
friction efficiency
hydrodynamics
kinematics
lubrication loaded tooth contact analysis
lubrication
matrix algebra
Multi-level method
Reynolds equation
spur gears
temperature
wavelength
