652 インパクトダンパによるパンタグラフ支持装置の制振の研究

概要

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We tried to reduce the vibration of a pantograph support system by using an impact damper. We made a simple model of the pantograph support system and examined the vibration reduction. The model consists of a cantilevered beam onto which a primary mass with an impact damper is attached to the free end of the beam. This cantilevered beam model is inclined to give the centrifugal force generated when a train runs on curve track. We measured the acceleration time history of the primary mass when the frequency of the foundation excitation was swept up under the constant magnitude of the acceleration of the foundation. The experimental tests indicate that centrifugal force deteriorates the damping effect of the experimental model. To clarify the vibration characteristics of the vibration systems containing impactors, a mathematical model was developed that represents the vibration testing system. The vibration responses of the system with the impactors were calculated, and the vibration energies or both the primary system and the impactors were obtained. The relationship between a kind of impact and damping effect if demonstrated.
社団法人日本機械学会の論文
2000-09-01