摘要
以直齿圆柱齿轮为研究对象,基于能量守恒定律和傅立叶定律推导了齿轮瞬态温度场的导热微分方程,根据定解条件确定了齿轮各个界面边界条件,运用有限元方法和传热学理论建立直齿圆柱齿轮模型,加载边界条件,并对其瞬态温度场进行仿真,得到了不同周期的温度场分布和节点温度变化曲线,系统地分析了其温度场随时间的变化。结果表明:温度随着啮合周期的增多而增高;在啮合阶段节点温度有一急剧升高,在退出啮合后进入非啮合阶段,温度逐渐降低;啮合阶段温升大于非啮合阶段温度的下降,该节点温度总体趋势升高。分析结果符合实际,为齿轮的热分析奠定了坚实的基础。
Taking the spur gear as research objec4 the heat conduction differential equation of gear transient temperature field was derived based on law of conservation ofenergy and Fourier＇s law. Each interface boundary condition of gear was identified according to the boundary conditions. The spur gear models were established , the boundary conditions were loaded and the transient temperature fields was simulated based on the finite element method and the heat transfer theory. The temperature distribution in different periods and the node temperature change curve were obtained. The temperature fields changes with time were analyzed systematically. The results show that the temperature increases with mesh cycle. A node temperature rise sharply in the meshing stage. The temperature is gradually reduced from out of mesh to the meshing stage. The meshing stage temperature rise is greater than non meshing stage temperature drop and the node temperature rise in general. The analysis results are more practical and lay a solid foundation for the thermal analysis of the gear.
出处
《航空发动机》
2013年第2期14-18,43,共6页
Aeroengine
基金
航空科学基金(20110450002)资助
关键词
齿轮传动
温度场
边界条件
瞬态
节点温度
gear drive
temperature field
boundary conditions
transient
node temperature
