辐板式结构齿轮传动系统的振动

本文以一个典型的齿轮传动系统为例,讨论了辐板式结构对系统固有频率和振型等动态特性的影响,并进一步计算了当辐板柔度不同时系统的动态响应,得到了轮齿上的动载荷,分析了辐板柔度的影响和附加阻尼的效用,得出一些规律性的结论,以指导辐板结构的设计及其在减振降噪方面的应用。 

VIBRATION OF GEAR SYSTEM WITH WEB STRUCTURE

The web structure has been widely used in design of aviation gears,and its structure vibration has attracted much attention.But the function of web as a torsion spring in the dynamic behaviour of gear system needs a thorough investigation still.In this paper,a typical gear transmission is taken for example,its dynamic model has been built up to analyze the vibration mode of the system.The dynamic responses of this system at various speeds have been obtained with Fourier method by considering the transmission error of the pair of gears as excitation.Further,the influences of web flexibility and attached damping on the dynamic responses have been studied,the dynamic loads on the teeth when the web thickness is changed,and the damping,both attached and unattached,have been calculated respectively.Some useful conclusions have been drawn which show that the combination of flexible web and attached damping can lower the vibration level and decrease the dynamic loads obviously.