Current Status of Research on Contact Fatigue Life and Influencing Factors of Solid Lubrication Gears
As an important component in the field of transmission,the service life of gears has received wide attention.In the gear operation process,the contact tooth surface is subject to mutual rolling action and mutual sliding action,easy to produce tooth contact fatigue failure.Solid lubri-cation gear refers to the gear tooth surface coated with a layer of solid lubrication coating gear,the coating can effectively reduce the friction and wear of the gear meshing surface and improve its load-bearing capacity,and ultimately realize the purpose of extending the contact fatigue life of the gear.This paper mainly summarizes the current research status of solid lubrication gear contact fatigue life at home and abroad.First of all,the contact fatigue test research on solid lubricated gears is summarized,including the development of various types of gear testing machines,the typical contact fatigue failure forms of various solid lubricated gears,as well as the relevant life calculation models and test methods proposed and so on.Then,from the perspective of contact mechanics and tribology between gear meshing surfaces,and considering the characteristics of solid lubrication coatings,various types of life calculation models based on numerical calculations and finite element analysis are outlined.Then,the in-fluence of three main factors,namely,surface physical properties,service conditions and solid lubrication materials,on the contact fatigue be-havior of solid lubricated gears is explored and analyzed.Finally,this paper summarizes and looks forward to the future research direction of con-tact fatigue life of solid lubricated gears.
万方数据
维普
