阻尼对高速凸轮机构动力学的影响分析

The Effect of Damping on Ddynamics of a High-speed Cam Mechanism

建立了考虑阻尼因素的等效单自由度高速凸轮机构的动力学模型,以正弦加速度运动规律方程为激振函数,推导出了从动件系统主振段和余振段的位移和加速度动态响应方程并绘制出了动态响应变化曲线,得出了不同阻尼比和周期比对主振段和余振段的动态响应,从而为高速凸轮机构的合理设计提供了一定的理论依据。

Considered the factor of damping, a single degree of freedom＇ s dynamic model of the high-speed cam mechanism is established. Choosing the law of sine acceleration motion as the excitation function, a displacement and acceleration dynamic response equations of the main vibration phase and residual vibration phase, the working dynamic response change curve through the inferential reasoning working end movement equation is derived. The result is obtained that different period and damping ratio have different impact on dynamic response to the main vibration phase and residual vibration phase. It provides the theory foundation for high-speed cam mechanism＇ s rational design.