摩托车振动激振力突变问题的研究

A Study on Sudden Changes of Motorcycle Shock Severity

摩托车整车振动激振力随车速度变化而突变,这对摩托车的乘坐舒适性和整机寿命都带来负作用;当发动机产生的激振力特别是z方向的振动与车架的第二阶固有频率吻合时,便会引发共振,造成摩托车整机的振动剧烈;通过对摩托车用车架进行动态分析,找出解决摩托车振动激振力突变的重要途径是加大车架的刚度。

The shock severity of motorcycle changes suddenly as the speed of motorcycle varies,which generates a negative effect to the riding comfort of the motorcycle and the life time of the engine The paper says that the fact that resonance will appear when exciting force happens, especially when the shock in direction z coincides with the inherent frequency of the second step of the frame will bring severe vibration to the whole motorcycle. The best wayout is to improve the frame rigidity.