Temperature Field Analysis and Experimental Test of Spur Gears with High Contact Degree
Pan Yu
Yang Man
Bao Heyun
Li Fajia
Abstract：The spur gear with high contact degree used in the helicopter transmission system is lubricated and cooled by oil injection,and its temperature characteristics are related to the service life of the gear.Based on the computational fluid dynamics(CFD)idea,a numerical model for the temperature field of oil injection lu-brication of spur gears with high contact degree is established.The volume of fluid(VOF)and the multiple refer-ence frame(MRF)method are used to obtain the temperature and convective heat transfer coefficient of gear sur-faces.The influence of lubricating oil parameters,working condition parameters and gear parameters on tooth surface temperature and convective heat transfer is analyzed by the control variable method.The gear tempera-ture test is carried out on the CL-100 type gear testing machine.The results show that the trend of the gear tem-perature rising with the increase of load is consistent with the CFD simulation results.The temperature of the gear with high contact degree is higher than that of the gear with ordinary contact degree,and this phenomenon becomes more obvious with the increase of load.
Keywords：Spur gears with high contact degreeOil injection lubricationTemperature fieldCFD
Publication Date：2024-07-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：13( 101-113 )