粘性离合器摩擦副油膜均匀性分析  

Analysis on the oil film uniformity of hydro-viscous drive friction pairs

作　　者：周天宇[1] 龚国芳[1] 廖湘平[1] 王鹤[1] 

机构地区：[1]浙江大学流体动力与机电系统国家重点实验室,浙江杭州310027

出　　处：《哈尔滨工程大学学报》2015年第7期954-958,共5页Journal of Harbin Engineering University

基　　金：国家973计划资助项目(2013CB035400);国家863计划资助项目(2012AA041803);国家自然科学基金资助项目(51221004)

摘　　要：为解决传统粘性离合器(HVD)摩擦副偏磨问题,设计了一种改进结构的粘性离合器。在稳态调速工况下进行了摩擦副受力分析,得出了不同的油膜厚度分布规律。基于不可压流动控制方程和RNG k-ε湍流模型建立了三维流场模型,应用Fluent进行了仿真计算对比,用均方差作为指标评价了油膜的厚度分布。结果表明:改进结构HVD的油膜均匀性比原有结构至少提高了1.6倍,很好地实现了多片摩擦副均载分布。In order to solve the uneven wear problem of traditional hydro-viscous drive（ HVD） friction pairs,an improved hydro-viscous drive was designed. Force analysis of friction pairs in the steady state was conducted and distribution laws for different oil film thicknesses were obtained. A three-dimension flow field model was built based on the uncompressible flow control equation and RNG turbulence model,and Fluent was used for simulation and comparison. The thickness distribution was evaluated by the mean square error. The results indicated that the oil film thickness uniformity of the improved structure is at least 1. 6 times higher than the traditional one and better load distribution of friction pairs is realized.

关 键 词：粘性离合器 油膜厚度 均匀性 计算流体力学 摩擦副 均方差 

分 类 号：TH133.4[机械工程—机械制造及自动化]