Study on Dynamic Characteristics of Gear System with Waviness
Waviness is a very small displacement defect,but the influence on the dynamic response of the system is obvious.Con-sidering the impact of the waviness motivation on the gear system,a dynamic model of multi degree of freedom helical gear-bearing translational reverse coupling is established by centralized parameter method.The differential equation of the system is solved by Runge-kutta algorithm.The impact rules of waviness to the dynamic characteristics of the system are revealed by com-paring and analysing the response of the amplitude-frequency response,waterfall plot,time-domain diagram and FFT of the model revealed in this paper with the model without waviness of helical gear-bearing.The simulation result shows:at low speed,the impact of waviness is not obvious,the response both models is obviously periodicity,the amplitude modulation phenomenon is appeared,the main characteristic frequency of the system is the through frequency of the rolling element and the meshing fre-quency.With the increase of rotational speed,the main frequency is 1/2 of the meshing frequency both models,the frequency divi-sion resonance phenomenon occurs in both models.With the further increase of rotational speed,the main frequency of model without waviness is still meshing frequency and the through frequency of the rolling element.the waviness frequency of the driven gear appears in the response of the model presents in this paper.The waviness has a deep impact on the dynamics response of the system at a high speed.
NETL
NSTL
万方数据
维普
