2自由度の衝突振動(第2報) : 運動の性質と最適衝撃条件

概要

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The study deals with repetitive impact motion of the two-degrees-of-freedom hammering system consisting of an exciter, an impacter and a rigid stop for improvement of a vibrating hammer. This paper presents properties of the impact velocity of the hammer, the amplitude of both bodies, many resonant frequencies of the vibration and the impact activity. The activity is estimated by impulse and amplitude ratio of the impacter to the exciter. The value depends on excitation frequency, setting gap of the stop, mass of bodies and stiffness of springs. It is resonant condition that two ratios of the natural frequency to the excitation one equal to the multitude of integer. The limited gap range and the colliding velocity fail nearby these reso-nances. Solutions of the optimum impact problem give us combinations of mass and stiffness at the peak activity. There are three peaks in the case of adjustable gap and the only one peak in fixed gap. Two peaks exist on estimation of the product of impulse and amplitude ratio. This system surpasses the one-degree-of-freedom hammering system about the activity.
公益社団法人精密工学会の論文
1985-11-05