考虑实际齿面的功率四分支传动系统动态分析

针对功率四分支传动系统的动态特性,考虑实际齿面的啮合状况,通过采用集中质量法,建立了该系统的弯-扭耦合动力学微分方程,求解得到系统的频域和时域响应,利用齿面承载接触仿真技术(Loaded tooth contact analysis,LTCA)得到时变啮合刚度激励。结果表明:通过真实齿面拟合和LTCA技术的结合,可以得到更准确的齿轮在不同工况和齿面条件下的力学特性;轮齿修形后,可以减小传递误差,改善齿面的接触状况,使系统的动载荷波动明显减小。

Dynamic Analysis of Power Four-Branching Transmission Considering Actual Tooth Surface Features

Based on the error and the actual tooth surface modification, a dynamic mechanics model of dual power split transmission system is established. The concentration of quality standard is used to establish the bend-torsion coupling dynamics differential equation of the system, and the equation is solved to get the frequency domain and time domain responses of the system. The results show that: through a combination of the real tooth surface fitting and the loaded tooth contact analysis (LTCA) technology, the more accurate mechanical properties of gear in different working conditions and tooth surface conditions can be gotten; the gear tooth modification can reduce the transmission error, improve the tooth surface contact, and significantly reduce the dynamic load fluctuation of the system.