斜齿轮接触与热效应分析模拟

Helical gear contact and thermal effect analysis simulation

斜齿轮相较于直齿轮,承载能力更强,传动更为平稳,是大功率高精度传动系统不可缺少的传动部件之一,常用于高速重载的应用场景。更高的转速与更大的载荷导致了斜齿轮更高的本体温度,而温度是齿轮胶合失效的重要表征参数。以一对斜齿轮为研究对象,通过MATLAB商业软件建立了斜齿轮接触模型,基于赫兹接触理论、传热学理论,计算并研究了斜齿轮啮合时齿面接触应力、摩擦热流密度与不同位置的对流换热条件,提出了斜齿轮稳态温度场的计算方法,同时分析了不同转矩与转速条件下斜齿轮摩擦热流密度,最后将计算结果代入ANSYS Workbench商业软件中进行仿真分析,研究了不同转矩条件下斜齿轮稳态温度场分布。研究结果可为斜齿轮胶合失效提供一定参考。

Compared with spur gears,helical gears have a stronger bearing capacity and more stable transmission.They are one of the indispensable transmission components of high-power and high-precision transmission systems,and are often used in high-speed and heavy-load application scenarios.Higher rotational speed and greater load lead to higher body temperature of helical gears,and temperature is an important characterization parameter of gear scuffing failure.In this paper,a pair of helical gears is taken as the research object.The contact model of helical gears is established by MATLAB commercial soft-ware.Based on Hertz contact theory and heat transfer theory,the contact stress,friction heat flux and convective heat transfer conditions at dfferent positions of helical gears are calculated and studied.The calculation method of steady-state tempera-ture field of helical gears is proposed.At the same time,the friction heat flux of helical gears under different torque and speed conditions is analyzed.Finally,the calculation results are substituted into ANSYS Workbench commercial software for simulation analysis,and the steady-state temperature field distribution of helical gears under different torque conditions is studied.The research results can provide some reference for the scuffing failure of helical gears.