Abstract
The reduction of belt vibration was studied. Research conducted previously had shown that belt vibration associated with amplitude fluctuations was generated by multiple frequency components centering on the natural frequency. Focusing on this phenomenon, the effects of the natural frequency of the belt, the fundamental order of amplitude fluctuation, and the excitation from engine were determined using simulations. The results indicated that increasing the natural frequency, increasing the fundamental order by using engines with a larger number of cylinders, and reducing the change rate of engine speed would be effective in reducing vibration.