Electromagnetic thermal characteristics and demagnetization mechanism of eddy current dampers under strong shock conditions.
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| Title: | Electromagnetic thermal characteristics and demagnetization mechanism of eddy current dampers under strong shock conditions. |
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| Authors: | Chen, Yundong1 (AUTHOR), Li, Zixuan1,2 (AUTHOR) wvalvlya@gmail.com, Tao, Xuexuan1 (AUTHOR), Yang, Jingru3 (AUTHOR), Wu, Yi1 (AUTHOR), Wei, Zhiyi1 (AUTHOR), Yang, Panpan1 (AUTHOR), Mu, Zonggao1 (AUTHOR) |
| Source: | Journal of Mechanical Science & Technology. Feb2026, Vol. 40 Issue 2, p833-842. 10p. |
| Subjects: | Demagnetization, Dampers (Mechanical devices), Magnetic flux, Motor vehicle springs & suspension, Finite element method |
| Abstract: | This study focuses on two major drawbacks of eddy current damper (ECD) in vehicle suspension systems: thermal damping attenuation and impact-induced demagnetization. A transient finite element model for the coupling of electromagnetic and temperature fields was established, and its validity was verified through impact tests under multiple working conditions. With the damping force adopted as the key evaluation index, the simulation error was controlled within 4 %. The results indicate that when the temperature rises to 45 °C, the damping force attenuation rate reaches 8 %. Additionally, under impact conditions, the eddy current effect of the permanent magnet is enhanced, causing the magnetic flux lines to be squeezed into the internal magnetic circuit and leading to demagnetization. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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