摘要
建立了渐开线直齿轮传动模型,通过对于中、重载两种不同的载荷进行50余组热弹流润滑数值计算,分析了润滑油黏度与齿面卷吸速度的乘积对齿轮传动接触疲劳寿命的影响。研究结果表明:在齿面卷吸速度固定的情况下,改变润滑油黏度,二次压力峰在中载和重载的工况下都是单调增大的;其X的位置也都单调减小,即向入口区方向移动;次表面剪应力最大值在中载时先减小,再增大,而重载时却单调减小;次表面剪应力最大值的X的位置中载时向出口方向移动,Z位置逐渐向轮齿的表层移动;当重载时X方向是逐渐向出口区移动的,在Z方向是恒定在轮齿固体内部的。
A model was set up to analyze involute gear transmission,More than 50 Thermoelastohydrodynamic lubrication value calculated by load and overload,lubricant viscosity of the product of the tooth surface entrainment speed are analyzed the product of the effect on contact fatigue life of gear transmission.The results showed that in the case of fixed tooth surface entrainment speed,changing the viscosity of lubricating oil,the secondary pressure peak in the medium load and heavy conditions are monotonically increasing;,The position of X also decreases,in another word,move towards entrance area;Subsurface shear stress maximum load in first decreases and then increases,while they reload decreases monotonically; X position of subsurface shear stress maximum while the Medium load is in the direction toward the exit,the Z position moves to the tooth surface,whatever,the X direction of overload is gradually moving to the exit area,in the Z direction is constant within the tooth solid.
出处
《机械设计与制造》
北大核心
2015年第1期214-216,共3页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(50975189)
关键词
弹流润滑
黏度
齿面卷吸速度
次表面剪应力
EHL
Lubricant Viscosity
Teeth Surface Entrainment Velocity
Subsurface Shear Stress
