竖向TMD用板式电涡流阻尼器磁路对比分析

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摘要为提升竖向TMD用板式电涡流阻尼器（PECD）的耗能效率，首先分别开展了典型竖向电涡流TMD样机的阻尼性能测试与有限元仿真分析，然后基于相邻永磁体有效耦合率性能指标，采用三维电磁场有限元分析方法分别优化了外置式与内置式PECD的磁路设计，并对比分析了各磁路的耗能效率、耐久性与占用空间等。研究结果表明：提出的相邻永磁体有效耦合率可以很好地表征永磁体相互作用对PECD等效阻尼系数的影响程度，有助于指导磁路优化设计；外置式与内置式PECD磁路优化设计方案在相邻永磁体磁极布置、水平与竖向适宜间距等方面均存在较大差别；各最优磁路永磁体用量一定时，内置式PECD的等效阻尼系数略低于外置式PECD（附加导磁钢板），但远高于外置式PECD（无导磁钢板）；装配内置式PECD的竖向TMD结构相对紧凑，且耐久性也相对较高。

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	汪志昊
	李国豪
	周佳贞
	田文文
	郜辉

关键词 ：调谐质量阻尼器, 板式电涡流阻尼器, 等效阻尼系数, 磁路, 三维电磁场有限元仿真

Abstract：In order to improve energy dissipation efficiency of a planar eddy current damper (PECD) used in a vertical TMD,damping performances of a typical vertical eddy current TMD prototype were detected with tests and FE simulation analysis,respectively. Then,based on the effective coupling rate index of adjacent permanent magnets,the 3-D electromagnetic field finite element analysis method was applied to optimize magnetic circuit designs of external and built-in PECDs. The energy dissipation efficiency,durability and occupied space of each magnetic circuit were compared and analyzed. The study results showed that the effective coupling rate of adjacent permanent magnets can well characterize effects of permanent magnets’ interaction on equivalent damping coefficient of PECD,this is helpful for guiding the optimization design of magnetic circuits; there are larger differences between external and built-in PECDs’ magnetic circuit optimized schemes in magnetic polar arrangement of adjacent permanent magnets and suitable spacing in horizontal or vertical directions; when permanent magnets used in each optimal magnetic circuit are a certain amount,the equivalent damping coefficient of built-in PECD is slightly lower than that of external TMD with additional magnetic conductivity steel plate,but the former is much higher than that of external PECD without such a steel plate; the structure of a vertical TMD with a built-in PECD is relatively compact,and its durability is also relatively higher.

Key words： tuned mass damper (TMD) planar eddy-current damper (PTMD) equivalent damping coefficient magnetic circuit three-dimensional electromagnetic field simulation

收稿日期: 2017-05-05 出版日期: 2019-03-28

引用本文:

汪志昊，李国豪，周佳贞，田文文，郜辉. 竖向TMD用板式电涡流阻尼器磁路对比分析[J]. 振动与冲击, 2019, 38(7): 233-239.
WANG Zhihao,LI Guohao,ZHOU Jiazhen,TIAN Wenwen,GAO Hui. Contrastive analysis for magnetic circuit of a planar eddy current damper used in a vertical TMD. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(7): 233-239.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I7/233

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