密封介质对接触特性影响的建模分析  

Modeling Analysis and Experimental Research on Effects of Sealed Media on Frictional Contact of Sealing Ring

作　　者：宫燃[1] 张鹤[2] 张学荣[1] 徐宜[2] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]中国北方车辆研究所,北京100072

出　　处：《润滑与密封》2011年第11期25-28,共4页Lubrication Engineering

基　　金：国家自然科学基金项目(51005104);中国博士后科学基金项目(20110491355);江苏省基础研究计划(自然科学基金)项目(BK2011477);江苏大学校基金项目(10JDG033)

摘　　要：应用建模计算和性能试验相结合的方法对不同介质环境下车辆传动装置密封环的接触特性进行研究。以非牛顿流体的流变特性为基础,计及变黏度影响,模拟实际运行工况,运用有限差分数值解法,确定2种不同介质中密封摩擦副的摩擦因数和密封环温度等表达密封环接触特征的参数变化规律。通过试验进行对比论证,表明试验获取的摩擦因数和密封温升曲线与仿真曲线的基本变化规律保持一致,并且在密封系统中黏度小的介质在摩擦因数和密封温升方面较黏度大介质的数值小。通过建模和试验的双重评价方法,可以方便准确预估不同介质环境下的密封接触性能。A comprehensive method based on numerical computation and experimental analysis was presented to estimate the frictional contact of sealing ring in the different sealed media. According to the rheologieal property of the nonNewtonian fluid flow, the friction coefficient and thermal responses in the sealing system were investigated by the finite- difference computation, which the effect of oil temperature on the oil viscosity was considered. An experimental investigation was performed by comparison of numerical and experimental results to enable an assessment of the accuracy level. Experimental results indicate that virtual prediction data agree well with test data. It is shown that the friction coefficient and temperature are smaller in the media with the low viscosity than the high viscosity. This valuation method with the simulation model and experiment provides the convenient and reliable ways to estimate the contact performance of sealing ring in the different sealed media.

关 键 词：密封环 黏度 摩擦 温度 

分 类 号：TH117.1[机械工程—机械设计及理论]