Multiunit impact damper—Re-examined
Multiunit impact damper—Re-examined
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DOI：
10.1016/s0022-460x(85)80015-8
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发表时间：
1985-12
影响因子：
4.7
通讯作者：
C. Bapat;S. Sankar
中科院分区：
文献类型：
--
作者：
C. Bapat;S. Sankar
本文对库仑摩擦多单元冲击阻尼器进行了理论分析和计算机仿真研究。据发现，一个单一的阻尼器的性能被保留时，它是由一个多单元阻尼器与具有相同的总质量，库仑摩擦和恢复系数，和间隙的适度数量的单位取代。然而，阻尼系统的速度不连续性显着减少。在具有相同单元的周期性运动中，每个单元表现出两个等间距的撞击/循环运动，撞击发生在集群中，并且在时间上不是均匀分布的。考虑了碰撞单元数和库仑摩擦对振幅衰减、碰撞速度不连续性和碰撞时间分布的影响。
The multiunit impact damper with Coulomb friction has been studied theoretically and by simulation on the digital computer. It is found that the performance of a single damper is retained when it is replaced by a multi-unit damper with a moderate number of units having the same total mass, coefficients of Coulomb friction and restitution, and gap. However, the velocity discontinuity of the damped system is reduced significantly. In periodic motion with identical units, each unit exhibiting two equispaced impacts/cycle motion, impacts occur in clusters and are not uniformly distributed in time. The effect of the number of units and Coulomb friction on the amplitude reduction, velocity discontinuity at impact and temporal distribution of impacts is considered.