Smart Structures and Systems

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Design and analysis of plate-type eddy-current damper with high energy-dissipation capability

  • Shan, Jiazeng (Department of Disaster Mitigation for Structures, Tongji University) ;
  • Liu, Jie (Department of Disaster Mitigation for Structures, Tongji University) ;
  • Loong, Cheng Ning (Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology) ;
  • Wu, Weichao (Department of Disaster Mitigation for Structures, Tongji University)
  • Received : 2020.05.23
  • Accepted : 2021.01.06
  • Published : 2021.05.25
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Abstract

A plate-type eddy-current damper with high energy-dissipation capability is designed and analyzed. The damper is configured in a dimension of 270 mm × 500 mm × 80 mm by employing 16 pairs of rectangular magnets and a rectangular copper plate. The paired magnets are arranged as two rows of 4-by-4 arrays with polarities alternating along the moving direction, while the copper plate is embedded inside two rows of magnets. A finite-element model is developed to investigate eddy-current force. The damping coefficient of damper under a constant velocity of 0.2 m/s is 24.44 kN-s/m. The eddy-current force under harmonic motion can be fitted as a sum of a linear elastic force and a linear damping force. The stiffness coefficient is increased by 77 times and the damping coefficient is reduced relatively by 19%, for vibration frequency increased from 0.5 to 10.0 Hz. The sensitivity of stiffness and damping coefficients on the physical dimensions of magnet and copper plate are discussed. The phase lag is sensitive to copper-plate thickness but insensitive to clear gap between two rows of magnets. The damper is implemented on a based-isolated structure. It is shown that the damper could reduce the peak of base drift and absolute acceleration response spectra by 71.9% and 73.1%, respectively.

Keywords

Acknowledgement

This study is sponsored by the National Science Foundation of China (Grant No: 51878483), and the Key Laboratory of Performance Evolution and Control for Engineering Structures (Tongji University), Ministry of Education (No. 2019KF-6). The third author would like to thank the financial support from the Hong Kong PhD Fellowship Scheme (HKPFS) provided by the Research Grants Council of the HKSAR.

References

  1. ANSYS (2018), ANSYS Maxwell 3D, ANSYS Electronic 19.0, ANSYS, Inc.
  2. Ao, W.K. and Reynolds, P. (2019), "Evaluation of eddy current damper for vibration control of a frame structure", J. Physics Commun., 3(5), 055013. https://doi.org/10.1088/2399-6528/ab1deb
  3. Bae, J., Hwang, J., Park, J. and Kwag, D. (2009), "Modeling and experiments on eddy current damping caused by a permanent magnet in a conductive tube", J. Mech. Sci. Technol., 23(11), 3024-3035. https://doi.org/10.1007/s12206-009-0819-0
  4. Bae, J., Hwang, J., Kwag, D., Park, J. and Inman, D.J. (2014), "Vibration suppression of a large beam structure using tuned mass damper and eddy current damping", Shock Vib., 2014, 893914. https://doi.org/10.1155/2014/893914
  5. Bourquin, F., Caruso, G., Peigney, M. and Siegert, D. (2014), "Magnetically tuned mass dampers for optimal vibration damping of large structures", Smart Mater. Struct., 23(8), 085009. https://doi.org/10.1088/0964-1726/23/8/085009
  6. Chen, W., Jiang, J., Liu, J., Bai, S. and Chen, W. (2013), "A passive eddy current damper for vibration suppression of a force sensor", J. Phys. D: Appl. Phys., 46(7), 075001. https://doi.org/10.1088/0022-3727/46/7/075001
  7. Diez-Jimenez, E., Rizzo, R., Gomez-Garcia, M.J. and Corral-Abad, E. (2019), "Review of passive electromagnetic devices for vibration damping and isolation", Shock Vib., 2019, 1250707. https://doi.org/10.1155/2019/1250707
  8. Ebrahimi, B., Khamesee, M.B. and Golnaraghi, M.F. (2008), "Design and modeling of a magnetic shock absorber based on eddy current damping effect", J. Sound Vib., 315(4-5), 875-889. https://doi.org/10.1016/j.jsv.2008.02.022
  9. Ebrahimi, B., Khamesee, M.B. and Golnaraghi, M.F. (2009), "Eddy current damper feasibility in automobile suspension: modeling, simulation and testing", Smart Mater. Struct., 18(1), 015017. https://doi.org/10.1088/0964-1726/18/1/015017
  10. Engineering ToolBox (2001), [Online] Available at: https://www.engineeringtoolbox.com (Last accessed on March 10, 2020).
  11. Feudo, S.L., Allani, A., Cumunel, G., Argoul, P., Maceri, F. and Bruno, D. (2017), "Experimental analysis of a tuned mass damper with eddy current damping effect", Models, Simulation, and Experimental Issues in Structural Mechanics, Springer Series in Solid and Structural Mechanics, Springer, Cham, 8: 235-248. https://doi.org/10.1007/978-3-319-48884-4_13
  12. Heald, M.A. (1988), "Magnetic braking: improved theory", Am. J. Phys., 56(6), 521-522. https://doi.org/10.1119/1.15570
  13. Huang, Z.W., Hua, X.G., Chen, Z.Q. and Niu, H.W. (2018), "Modeling, testing, and validation of an eddy current damper for structural vibration control", J. Aerosp. Eng., 31(5), 04018063. https://doi.org/10.1061/(ASCE)AS.1943-5525.0000891
  14. Kazimierczuk, M. (2014), High-Frequency Magnetic Components, (2nd Edition), John Wiley & Sons, Ltd.
  15. Li, J., Zhu, S. and Shen, J. (2019), "Enhance the damping density of eddy-current and electromagnetic dampers", Smart Struct. Syst., Int. J., 24(1), 15-26. https://doi.org/10.12989/sss.2019.24.1.015
  16. Loong, C.N., Shan, J., Shi, Z. and Chang, C.C. (2020), "Approximate analysis of eddy-current force under time-varying velocity motion or structural control", J. Sound Vib., 475, 115295. https://doi.org/10.1016/j.jsv.2020.115295
  17. Lu, X., Zhang, Q., Weng, D., Zhou, Z., Wang, S., Mahin, S.A., Ding, S. and Qian, F. (2017), "Improving performance of a super tall building using a new eddy-current tuned mass damper", Struct. Control Health Monitor., 24(3), e1882. https://doi.org/10.1002/stc.1882
  18. Lu, X., Zhang, Q., Wu, W. and Shan, J. (2019), "Data-driven two-level performance evaluation of eddy-current tuned mass damper for building structures using shaking table and field testing", Comput.-Aided Civil Infrastruct. Eng., 34(1), 38-57. https://doi.org/10.1111/mice.12373
  19. MATLAB (2018), 9.7.0.1190202 (R2019b), Natick, Massachusetts: The MathWorks Inc.
  20. Pan, Q., He, T., Xiao, D. and Liu, X. (2016), "Design and damping analysis of a new eddy current damper for aerospace applications", Latin Am. J. Solids Struct., 13(11), 1997-2011. https://doi.org/10.1590/1679-78252272
  21. Schieber, D. (1975), "Optimal dimensions of rectangular electromagnet for braking purposes", IEEE Transact. Magnet., 11(3), 948-952. https://doi.org/10.1109/TMAG.1975.1058768
  22. Shi, Z., Shan, J., Wu, W. and Loong, C.N. (2020), "Mechanical modeling of eddy current damping regarding frequencydependence with test validation". [Under review]
  23. Sodano, H.A., Bae, J., Inman, D.J. and Belvin, W.K. (2005), "Concept and model of eddy current damper for vibration suppression of a beam", J. Sound Vib., 288(4-5), 1177-1196. https://doi.org/10.1016/j.jsv.2005.01.016
  24. Wang, Z., Chen, Z. and Wang, J. (2012), "Feasibility study of a large-scale tuned mass damper with eddy current damping mechanism", Earthq. Eng. Eng. Vib., 11(3), 391-401. https://doi.org/10.1007/s11803-012-0129-x
  25. Wang, W., Dalton, D., Hua, X., Wang, X., Chen, Z. and Song, G. (2017), "Experimental study on vibration control of a submerged pipeline model by eddy current tuned mass damper", Appl. Sci., 7(10), 987. https://doi.org/10.3390/app7100987
  26. Wu, W., Shan, J. and Ruan, K. (2018), "A kind of self-sensing eddy-current type energy consumption replaceable coupling beam", National Intellectual Property Administration, PRC Patent CN207436305U, September 21, 2018.
  27. Zhu, S., Shen, W. and Xu, Y. (2012), "Linear electromagnetic devices for vibration damping and energy harvesting: modeling and testing", Eng. Struct., 34, 198-212. https://doi.org/10.1016/j.engstruct.2011.09.024
  28. Zuo, L., Chen, W. and Nayfeh, S. (2011), "Design and analysis of a new type of electromagnetic damper with increased energy density", J. Vib. Acoust., 133(4), 041006. https://doi.org/10.1115/1.4003407