Vibration Damping Effect of the Impact Damper on a Piecewise Linear Mass Spring System
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概要
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The impact damper is a device for reducing the vibration amplitude of a mechanical system by the collisions between the damper mass within the container which is rigidly attached to the vibrating system and the container ends.In this paper, the damping effects of the impact damper are discussed for the mass spring system whose spring has nonlinear restoring characteristics. The nonlinear vibration system is approximated by a piecewise linear system. And the fundamental impact vibration when the damper mass collides with the container twice per cycle at equal time interval is treated theoretically, because this type of vibration is considered the most effective in reducing the vibration amplitude of the system.From the results of analysis and numerical calculation, it becomes clear that the domains where the stable periodic motions exist are comparatively large for a soft spring system and in these domains the damper can be considerably effective in reducing the vibration.
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