基于非线性能量阱的吊物系统减摆试验研究  

Experimental Study on Pendulation Reduction of Lifting Load SystemsUsing Eddy-current Nonlinear Energy Sinks

作　　者：王紫超[1,2] 彭轶文 李博涛 沈文爱 朱宏平 黄灿[1,2] 荀东亮[1,2] WANG Zichao;PENG Yiwen;LI Botao;SHEN Wenai;ZHU Hongping;HUANG Can;XUN Dongliang(CCCC Second Harbour Engineering Co Ltd,Wuhan 430040,China;Key Laboratory of Large-span Bridge Construction Technology in Transportation Industry,Ministry of Communications,Wuhan 430040,China;School of Civil and Hydraulic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]中交第二航务工程局有限公司,湖北武汉430040 [2]交通部长大桥梁建设施工技术交通行业重点试验室,湖北武汉430040 [3]华中科技大学土木与水利工程学院,湖北武汉430074

出　　处：《土木工程与管理学报》2021年第3期65-70,共6页Journal of Civil Engineering and Management

基　　金：中交第二航务工程局有限公司重点实验室开放课题;国家自然科学基金(51838006)。

摘　　要：本文提出了一种用于起重船吊物系统减摆的电涡流非线性能量阱(ENES),并通过振动台试验系统研究了ENES的减摆性能及其影响因素。设计和制作了摆长2 m的吊物系统模型与新型ENES装置,进行了系列自由振动与基底简谐输入的振动台试验,分别测试了ENES质量比和阻尼对减摆性能的影响规律。试验结果表明:ENES可以有效减小起重船吊物系统自由振动与基底简谐激励下的摆角和加速度响应,减摆性能随质量比的增大而提升,同时,阻尼则存在最优值。This paper proposes a novel eddy-current nonlinear energy sink(ENES)for pendulation reduction of lifting load systems of ship-mounted cranes.The performance of the ENES and its influence factors are systematically studied via a series of shaking table tests.A 2 m-long scaled lifting load system and a prototype ENES were designed and fabricated,a series of free vibration tests and base harmonic excitation tests are conducted,the influences of the mass ratio and damping on the pendulation reduction performances have been studied.The experimental results show that both the oscillation angle and acceleration responses of the lifting load system were significantly suppressed by the ENES.Furthermore,the performance increases with increasing the mass ratio,and the optimal damping exists for pendulation reduction.

关 键 词：吊物系统 摆振控制 非线性能量阱 电涡流 减摆性能 

分 类 号：U664.43[交通运输工程—船舶及航道工程]