Manufacturing Technology 2020, 20(6):714-719 | DOI: 10.21062/mft.2020.114

Numerical Simulation and Experimental Analysis of the Magnetic Damping Effect generated by a Moving Magnet

Petr Ferfecki1,2, Marek Konečný1,3, Michal Molčan1,2, Jaroslav Zapoměl2,4
1 IT4Innovations, VSB - Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
2 Department of Applied Mechanics, VSB - Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
3 Department of Applied Mathematics, VSB - Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
4 Institute of Thermomechanics, The Czech Academy of Sciences, Dolejškova 1402/5, 182 00 Praha 8, Czech Republic

Nowadays, to reduce vibrations of machines, damping devices utilize the eddy current damping ef-fect being increasingly investigated for its advantages of no mechanical contact, no viscous liquid required, high reliability, and good damping capacity. This article studied the main principle of the eddy current damping effect for a moving permanent magnet in a stationary and electrically conduc-tive nonmagnetic cylindrical tube. The magnetic damping coefficient is investigated experimentally, analytically, and by numerical simulations in a steady-state. The numerical simulation is performed in the ANSYS Maxwell programme. The obtained results indicate that the damping force affecting the moving magnet has a viscous form. The experimentally measured and computed results are in good agreement. The effect of varying tube diameter and the tube wall thickness on the magnetic damping coefficient is shown. The contribution of this article consists in the development and a comparison of the obtained results of three approaches for determining the magnetic damping coefficient for a mov-ing magnet in a cylindrical tube.

Keywords: Eddy Current Induction, Permanent Magnet, Dissipative Power, Magnetic Damping Force
Grants and funding:

The Ministry of Education, Youth and Sports from the National Programme of Sustainability (NPU II) project „IT4Innovations excellence in science - LQ1602“, by the grant project 19-06666S of the Czech Science Foundation, and by the “Student’s Grant Competition project SP2020/139“.

Received: September 16, 2020; Revised: November 16, 2020; Accepted: December 2, 2020; Prepublished online: December 11, 2020; Published: December 23, 2020  Show citation

ACS AIP APA ASA Harvard Chicago IEEE ISO690 MLA NLM Turabian Vancouver
Ferfecki P, Konečný M, Molčan M, Zapoměl J. Numerical Simulation and Experimental Analysis of the Magnetic Damping Effect generated by a Moving Magnet. Manufacturing Technology. 2020;20(6):714-719. doi: 10.21062/mft.2020.114.
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. Hajalilou, A., Mazlan, S. A., Lavvafi, H., Shameli, K.: Field Responsive Fluids as Smart Materials. 1st edn. Springer, Singapore (2016). Go to original source...
    2. Sheng, P., Wen, W.: Electrorheological Fluids: Mechanisms, Dynamics, and Microfluidics Applications. Annual Review of Fluid Mechanics 44, 143-174 (2012). Go to original source...
    3. Vicente, J., Klingenberg, D. J., Hidalgo-Alvareza, R.: Magnetorheological fluids: a review. Soft Matter 7, 3701-3710 (2011). Go to original source...
    4. Gong, X., Ruan, X., Xuan, S., Yan, Q., Deng, H.: Magnetorheological Damper Working in Squeeze Mode. Advances in Mechanical Engineering 6, 1-10 (2015). Go to original source...
    5. Zapoměl, J., Ferfecki, P.: The Oscillation Attenuation of an Accelerating Jeffcott Rotor Damped by Magnetorheological Dampers Affected by the Delayed Yielding Phenomenon in the Lubricating Oil. Journal of Vibration and Acoustics 140(1), 1-10 (2018). Go to original source...
    6. Ferfecki, P., Zapoměl, J., Marek, M.: Multi-physical analysis of the forces in the flexible rotor supported by the magnetorheological squeeze film dampers. 12th International Conference on the Theory of Ma-chines and Mechanisms 2016, vol. 44. Mechanisms and Machine Science (2017). Go to original source...
    7. Zuo, L., Chen, X., Nayfeh, S.: Design and Analysis of a New Type of Electromagnetic Damper With In-creased Energy Density. Journal of Vibration and Acoustics 133(4), 1-8 (2017). Go to original source...
    8. Beneš, P., Průcha, V., Hájek, J., Vítovec, V.: Possibility of Using Eddy Current Evaluation of the Heat Treatment of Steel. Manufacturing Technology 19(3), 371-374 (2019). Go to original source...
    9. Amati, N., Silvagni, M., Tonoli, A.: Transformer Eddy Current Dampers for the Vibration control. Jour-nal of Dynamic Systems, Measurement and Control 130(9), 1-9 (2008). Go to original source...
    10. Donoso, G.,, Ladera, C. L., Martin, P.: Magnet fall inside a conductive pipe: motion and the role of the pipe wall thickness. European Journal of Physics 30(4), 855-869 (2009). Go to original source...
    11. Knoepfel, H. E.: Magnetic Fields: Comprehensive Theoretical Treatise for Practical Use. 1st edn. John Wiley & Sons, Inc. New York (2000). Go to original source...
    12. Uhlig, R. P., Zec, M.,.Brauer, H.:.Lorentz Force Eddy Current Testing: a Prototype Model. Journal of Nondestructive Evaluation, Journal of Nondestructive Evaluation 31, 357-372 (2012). Go to original source...
    13. Šulka, P., Sapietová, A., Dekýš, V., Sapieta, M.: Analysis and synthesis parameters influencing to the ef-fects of impact. In: Vasko, M., et al. (eds.) XXII Slovak-Polish Scientific Conference on Machine Model-ling and Simulations 2017, vol. 157. MATEC Web of Conferences (2018). Go to original source...

    This is an open access article distributed under the terms of the Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


    Return to the content