自动变速器表面涂层齿轮温度场特性的仿真与试验研究*

doi:10.19562/j.chinasae.qcgc.2018.09.008

Abstract

Abstract: Gear surface coating is an effective method to enhance the fatigue life of transmission gears. In this paper, based on nonlinear finite element method, heat generated by the friction between gears is regarded as heat source, friction and wear tester is used to obtain the friction factor of coating surface, and the frictional heat flux density and convection coefficient of coated gears under steady-state condition are accurately calculated. Then, a numerical simulation on the coated gear temperature field of a seven-speed dual-clutch automatic transmission under different coating thicknesses is conducted with ANSYS to reveal the effects of parameters such as the friction factor of coating and the rotation speed and torque of gear on the steady-state temperature field of gears. Finally infrared thermal imager is adopted to measure the gear surface temperature in different working conditions on gear dynamic cycle loading tester. The results verify the accuracy of simulation model and show that reducing the friction factor of coated gear can effectively lower the maximum bulk temperature of gears. The research provides reference basis for the anti-scuffing and surface modification design of transmission gears

Key words: transmission gear, manganese phosphate coating, temperature field, frictional performance, simulation, test

Zang Libin, Chen Yong, Chen Hua, Liu Hai, Zhou Huidong, Li Kai & Luo Daguo. Simulation and Experimental Study on Temperature Field Characteristics of Coated Gears in Automatic Transmission[J]., 2018, 40(9): 1054-1061.

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Simulation and Experimental Study on Temperature Field Characteristics of Coated Gears in Automatic Transmission

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