对数滚子的热弹流凸度量设计研究  

Crowning Design for the Logarithmic Profile Roller According to a Thermal Elastohydrodynamic Lubrication (EHL) Theory

作　　者：孙浩洋[1] 陈晓阳[2] 张宏信[1] 

机构地区：[1]青岛大学机电工程学院,山东青岛266071 [2]上海大学轴承研究室,上海200072

出　　处：《摩擦学学报》2010年第6期567-571,共5页Tribology

基　　金：山东省高等学校优秀骨干教师国际合作培养项目;国家自然科学基金项目(50905090;50975146);国家863计划项目(2008AA04Z117);上海汽车工业科技发展基金项目(0320)的资助

摘　　要：基于最佳凸度量取值区间的概念,针对性能最优的对数轮廓滚子,提出了根据热弹流理论进行凸度设计的方法.使用该设计方法研究了对数滚子凸度量修正系数随工况参数的变化规律.定义了轴向膜厚分布系数和轴向压力分布系数,通过限制二者许用值的方法确保压力分布和膜厚分布的轴向均匀性,而轴向膜厚分布系数和轴向压力分布系数的许用值分别与最佳凸度量取值区间的下限和上限相对应.研究指出:轻载时凸度量修正系数的下限随载荷的增加而增加;重载时凸度量修正系数的下限随载荷的增加而趋于稳定,凸度量修正系数的上限随载荷的增加而增大;速度参数对最佳凸度量取值区间的影响不显著.Based on the concept of ＇Optimum Range of the Crowning Value＇,a crowning design method according to thermal EHL theory was proposed for the optimum logarithmic profile roller.The axial pressure distribution index and axial film thickness distribution index were defined,and satisfactory axial pressure and film thickness distribution could be realized by restricting the allowable value of the two indexes mentioned above.Moreover,the lower bound and upper limit of the optimum range of the crowning value were corresponding to the allowable value of the axial film thickness distribution index and the axial pressure distribution index separately.Using this method,the relationship between the crowing modification index and the working conditions was studied.It was concluded that the lower bound of the optimum range of the crowning value increased with the increase of applied load when the load was low,while it reached a stable value when the load was heavy,the upper limit of the optimum range of the crowning value increased with the increase of the applied load.however,the influence of the velocity parameter on the optimum range of the crowning value was not pronounced.

关 键 词：弹流润滑 有限长线接触 凸度设计 最佳凸度量取值区间 

分 类 号：TH117.2[机械工程—机械设计及理论]