Optimal design of tubular electric eddy damper and its damping force&rsquo;s accurate measurement

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (3) : 149-154.

Optimal design of tubular electric eddy damper and its damping force’s accurate measurement

YU Jianda1,2, ZHANG Xiangqi1, PENG Linfeng1, PENG Jian1,2

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Abstract

Here, Copper tubes and magnets were used to fabricate tubular electric eddy dampers.A precise measuring method for damping force of a tubular electric eddy damper was proposed to eliminate effects of friction and inertia force, and obtain accurate electric eddy damping force.Relations between damping force and magnetic pole thickness, pole spacing, relative speed of copper tube to magnet, etc., respectively were studied.The results showed that damping force time history can be accurately obtained using the proposed measuring method; damping coefficient of the damper increases with increase in magnetic pole thickness and number of magnetic pole, and this coefficient firstly increases and then decreases with increase in pole spacing; electric eddy damper is approximately an ideal viscous one and its damping coefficient is directly proportional to number of magnetic pole; taking efficiency value of damping coefficient as the evaluation index, the optimal values for magnetic pole thickness and pole spacing of the tubular electric eddy damper are obtained to provide a reference for the optimal design of tubular electric eddy dampers.

Key words

structural vibration control / electric eddy damper / ideal viscous damper / damping coefficient measurement

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YU Jianda1,2, ZHANG Xiangqi1, PENG Linfeng1, PENG Jian1,2. Optimal design of tubular electric eddy damper and its damping force’s accurate measurement[J]. Journal of Vibration and Shock, 2020, 39(3): 149-154

References

[1] 杨毅清，徐东东. 基于电涡流阻尼器的数控加工振动控制[J].振动与冲击,2016,35(4)：177-187
Yang Yiqing,Xu Dongdong.Vibration suppression of NC machining based on eddy current dampers[J].Journal of vibration and Shock, 2016,35(4)：177-187
[2] Mashhood A. B., Yiqing Yang, Xingzheng Pei, et al. Five-axis milling vibration attenuation of freeform thin-walled part by eddy current damping[J]. Precision Engineering, 51 (2018) 682–690
[3] 祝长生. 一种用于电磁轴承特性可控的弹性备用轴承[J]. 航空学报, 2010, 31(10):2087-2092
Zhu Changsheng.A Controllable Flexible Backup Bearing for Active MagneticBearings[J].Acta Aeronauticaet Astronautica Sinica, 2010, 31(10):2087-2092
[4] 李斌，牛文超，徐兆懿.电涡流耗能动力吸振器设计与试验研究[J]. 西北工业大学学报,2016,34(1):18-23
Li Bin,Niu Wenchao,Xu Zhaoyi.Eddy Current Vibration Absorber Design and Experiments[J].Journal of Northwestern Polytechnical University, 2016,34(1):18-23
[5] Wang Zhihao, Chen Zhengqing, Wang Jianhui. Feasibility study of a large-scale tuned mass damper with eddy current damping mechanism[J]. Earthq Eng & Eng Vib, (2012) 11: 391-401
[6] 雷旭, 牛华伟, 陈政清, 等.大跨度钢拱桥吊杆减振的新型电涡流TMD开发与应用[J]. 中国公路学报, 2015,28(4):60-69.
Lei Xu,Niu Huawei,Chen Zhengqing,et al.Development and Application of a New-type Eddy Current TMD for Vibration Control of Hangers of Long-span Steel Arch Bridges[J].China Journal of Highway and Transport, 2015,28(4):60-69.
[7] Zheng Lu, Biao Huang, Qi Zhang, et al. Experimental and analytical study on vibration control effects of eddy-current tuned mass dampers under seismic excitations[J]. Journal of sound and vibration, 2018, 421:153-165
[8] S.K.Cheah, H.A.Sodano. Novel eddy current damping mechanism for passive magnetic bearings[J]. Journal of Vibration and Control,2008, 14(11):1749-1766.
[9] 陈政清,田静莹,黄智文,等. 板式电涡流阻尼系数的计算与试验修正方法[J]. 中国公路学报, 2016, 29(10):46-53.
Chen Zhenqing, Tian Jingying, Huang Zhiwen, et al. Calculation and Test Correction Method of Plane Type Eddy Current Damping Coefficient[J]. China Journal of Highway and Transport, 2016, 29(10):46-53.
[10] 汪志昊, 张闯, 周佳贞, 等. 新型装配式竖向电涡流TMD试验研究[J]. 振动与冲击, 2017,36(1):16-23
Wang Zhihao, Zhang Chuang,Zhou Jiazhen, et al. Tests for a prefabricated vertical TMD with eddy-current damping[J]. Journal of vibration and Shock, 2017,36(1):16-23
[11] J.G. Detoni , Q. Cui , N. Amati ,et al. Modeling and evaluation of damping coefficient of eddy current dampers in rotor dynamic applications[J]. Journal of sound and vibration, 2016,373: 52-65
[12] Xiang Shi, Songye Zhu. Simulation and optimization of magnetic negative stiffness dampers[J]. Sensors and Actuators A,2017, 259:14-33
[13] 肖登红, 潘强, 何田. 一种新型电涡流阻尼器及阻尼性能研究[J]. 噪声与振动控制, 2014, 34 (6):197-201
Xiao Denghong, Pan Qiang, He Tian.Design and Analysis of a Novel Eddy Current Damper[J]. Noise and Vibration Control, 2014, 34 (6):197-201
[14] 宋伟宁，徐斌. 上海中心大厦新型阻尼器效能与安全研究[J]. 建筑结构，2016,46（1）:1-8
Song Weining, Xu Bin. Research on performance and safety of innovated damper for shanghai tower[J]. Building Structure, 2016,46(1):1-8
[15] Jae-Sung Bae, Jai-Hyuk Hwang, Jung-Sam Park, et al. Modeling and experiments on eddy current damping caused by a permanent magnet in a conductive tube[J]. Journal of Mechanical Science and Technology, 23 (2009) 3024-3035