线接触弹流中弹性变形计算方法对比研究

发布时间：2018-04-16 20:10

本文选题：线接触 + 弹流润滑　；参考：《润滑与密封》2016年07期

【摘要】：综述弹流润滑中弹性变形量的计算方法,针对5种线接触弹性变形量计算方法,求解Hertz压力分布、三角形压力分布和均匀压力分布下的线接触弹性变形量,比较评价5种计算方法的优越性。研究发现,张鹏顺的方法将奇异点单独处理,黄平的方法避开奇异点,2种方法都能得到很小的中心变形误差、数据波动和极值之差;OKAMURA以更简单的方式避开了奇异点,但数据波动和极值之差较大;EVANS的微分法能得到更精确的中心变形量;FFT法的精确度要低于其他4种方法。5种方法在计算原理、计算量和计算结果的准确性上各有特点,在线接触弹性流体润滑计算中都能得到合理的应用。
[Abstract]:In this paper, the calculation methods of elastic deformation in elastohydrodynamic lubrication are summarized. The Hertz pressure distribution, triangle pressure distribution and linear contact elastic deformation under uniform pressure distribution are solved for five kinds of linear contact elastic deformation calculation methods.The advantages of five calculation methods are compared and evaluated.It is found that Zhang Pengshun's method treats singularity points separately, Huang Ping's method avoids singularity points and two methods can get very small central deformation errors, and the difference between data fluctuation and extremum value can avoid singularity points in a simpler way.But the difference between data fluctuation and extreme value is big. The differential method of EVANS can get more accurate center deformation. The accuracy of FFT method is lower than that of other four methods. 5 methods have their own characteristics in calculation principle, calculation quantity and accuracy of calculation results.The on-line contact elastohydrodynamic lubrication calculation can be reasonably applied.
【作者单位】：浙江大学机械工程学系;
【基金】：国家自然科学基金项目(51375436) 国家高技术研究发展计划(863计划)项目(2015AA043002)
【分类号】：TH117.2

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