EFFECT OF FRICTIONAL FORCE ON GEARING CONTACT FATIGUE STRENGTH  

作　　者：QI Xiumei GAO Chuangkuan 

机构地区：[1]College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

出　　处：《Chinese Journal of Mechanical Engineering》2007年第1期40-43,共4页中国机械工程学报（英文版）

基　　金：This project is supported by Provincial Natural Science Foundation of Shanxi, China (No. 20041057);Scholarship Council of Shanxi, China (No. 2005-22)

摘　　要：The model for computing frictional coefficient between two teeth faces at the state of mixed elastohydrodynamic lubrication is established. And then more than 80 sets of numerical calculations and six sets of disc fatigue tests are completed. The results show that when the film thickness ratio λ 〈1.6, frictional coefficient μ is drastically decreased as λ. rises; Thereafter it decreases smoothly until λ=4.5. When λ〉4.5, however, it goes up again with λ, which indicates that the excessive film thickness ratio will deteriorate gearing contact fatigue strength. At the end, the formulae for determining the frictional coefficients are formed.The model for computing frictional coefficient between two teeth faces at the state of mixed elastohydrodynamic lubrication is established. And then more than 80 sets of numerical calculations and six sets of disc fatigue tests are completed. The results show that when the film thickness ratio λ 〈1.6, frictional coefficient μ is drastically decreased as λ. rises; Thereafter it decreases smoothly until λ=4.5. When λ〉4.5, however, it goes up again with λ, which indicates that the excessive film thickness ratio will deteriorate gearing contact fatigue strength. At the end, the formulae for determining the frictional coefficients are formed.

关 键 词：Involute spur gear Contact fatigue strength Mixed elastohydrodynamic lubrication Frictional coefficient Fatigue tests 

分 类 号：TH132[机械工程—机械制造及自动化]