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踏板式摩托车各系统可视为具有一定自由度的弹性体,在动载荷的作用下,产生各种形式的振动。当外界动载荷的作用频率与系统的某一固有频率同步,就会产生共振。共振不仅严重影响人的乘坐舒适性和操纵稳定性,而且还影响车体部件的强度及耐久性和电器元件的可靠性。因此如何减小振动,提高车架固有频率以使输入振动的频率远离车
Each system of a scooter can be regarded as a flexible body with certain degree of freedom, and under the action of dynamic load, various forms of vibration are generated. When the action frequency of external dynamic load and the system of a natural frequency synchronization, it will produce resonance. Resonance not only seriously affects people’s riding comfort and handling stability, but also affects the strength and durability of body parts and the reliability of electrical components. Therefore, how to reduce the vibration, increase the natural frequency of the frame so that the frequency of input vibration away from the car