电涡流-磁力混合装置的仿真与试验研究  

Simulation and experimental research on eddy current-magnetic hybrid device

作　　者：朱前坤[1] 姜浩文 ZHU Qian-kun;JIANG Hao-Wen(Institute of Earthquake Protection and Disaster Mitigation,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学防震减灾研究所,甘肃兰州730050

出　　处：《兰州理工大学学报》2025年第1期108-115,共8页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51668042,51868046)。

摘　　要：为提高电涡流阻尼器(TMD)的阻尼性能并节约材料成本,将电涡流TMD和磁力TMD结合提出一种电涡流-磁力TMD(EMTMD).介绍EMTMD的工作原理,并以某一人行桥结构模型为例设计EMTMD,利用试验方式计算出衡量其阻尼性能的电涡流阻尼系数和磁力阻尼系数,并验证三维电磁场有限元仿真分析稳态和瞬态方法的准确性.利用验证后的有限元分析方法,对影响两种阻尼系数对的三种主要因素进行分析,并得出影响规律.依据其影响规律对EMTMD进行优化,将优化后的EMTMD放置于人行桥结构模型上进行振动控制试验.试验结果表明:EMTMD对人行桥结构模型具有良好的控制效果,且减振效果优于传统电涡流TMD.In order to improve the damping performance of an eddy current tuned mass damper(TMD)while save the material cost a new eddy current-magnetic TMD(EMTMD)is proposed by combining eddy current TMD with a magnetic TMD.The working principle of EMTMD is introduced,followed by its design for a pedestrian bridge model.The eddy current damping coefficient and magnetic force damping coefficient are calculated by the experimental method,and the accuracy of the three-dimensional electromagnetic field finite element simulation,including both steady-state and transient analyses,is verified.Subsequently,the three main parameters affecting the two damping coefficient pairs are analyzed by using the verified finite element analysis method,and their influence law is obtained.The EMTMD is optimized according to its influence law.The optimized EMTMD was installed on the pedestrian bridge model for the vibration control test.The experimental results show that the EMTMD provides effective vibration control for the pedestrian bridge model,with superior damping performance compared to the traditional eddy current TMD.

关 键 词：振动控制 电涡流-磁力阻尼器 有限元法 阻尼系数 

分 类 号：TU352.1[建筑科学—结构工程]