Realization of a Strongly Nonlinear Vibration-Mitigation Device Using Elastomeric Bumpers
Realization of a Strongly Nonlinear Vibration-Mitigation Device Using Elastomeric Bumpers
复制标题
DOI：
10.1061/(asce)em.1943-7889.0000692
复制
发表时间：
2014-05
期刊：
影响因子：
--
通讯作者：
Jie Luo;N. Wierschem;L. Fahnestock;L. Bergman;Billie F. Spencer;M. Al-Shudeifat;D. McFarland;D. Dane Quinn;A. Vakakis
中科院分区：
文献类型：
--
作者：
Jie Luo;N. Wierschem;L. Fahnestock;L. Bergman;Billie F. Spencer;M. Al-Shudeifat;D. McFarland;D. Dane Quinn;A. Vakakis
摘要最近的研究表明，非线性能量吸收（内斯）装置用于机械和结构系统的振动缓解是可行的。当附加到主结构上时，这些轻质被动装置可以通过其非线性刚度特性有效地降低结构的振动响应。在这项研究中，两个自由度的内斯装置设计使用创新的弹性缓冲器作为关键部件提供非线性恢复力。一些弹性保险杠配置进行了实验评估，和缓冲器的几何参数的效果进行了研究，重点是它们对缓冲器的刚度特性的影响。一个内斯设备采用不同的保险杠，然后实现了6层楼高的模型建筑和测试使用脉冲状的基础运动。内斯装置的非线性系统识别表明，使用弹性体缓冲器实现非线性刚度特性。建筑设备的振动台试验
AbstractRecent research has shown the viability of using nonlinear energy-sink (NES) devices for vibration mitigation in mechanical and structural systems. When attached to a primary structure, these lightweight passive devices can effectively reduce the structural vibration response through their nonlinear stiffness properties. In this research, a two-degree-of-freedom NES device is designed using innovative elastomeric bumpers as the critical components providing nonlinear restoring forces. A number of elastomeric bumper configurations are evaluated experimentally, and the effect of geometric bumper parameters is investigated with a focus on their influence on the stiffness properties of the bumper. A NES device employing different bumpers is then implemented on a 6-story model building and tested using impulse-like base motion. Nonlinear system identification of the NES device shows that nonlinear stiffness properties are achieved using the elastomeric bumpers. Shake-table testing of the building equip...