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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.
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]
Copyright of Journal of Mechanical Science & Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 191693527
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Electromagnetic thermal characteristics and demagnetization mechanism of eddy current dampers under strong shock conditions.
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Chen%2C+Yundong%22">Chen, Yundong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Zixuan%22">Li, Zixuan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wvalvlya@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Tao%2C+Xuexuan%22">Tao, Xuexuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Jingru%22">Yang, Jingru</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Yi%22">Wu, Yi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Zhiyi%22">Wei, Zhiyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Panpan%22">Yang, Panpan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mu%2C+Zonggao%22">Mu, Zonggao</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Mechanical+Science+%26+Technology%22">Journal of Mechanical Science & Technology</searchLink>. Feb2026, Vol. 40 Issue 2, p833-842. 10p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Demagnetization%22">Demagnetization</searchLink><br /><searchLink fieldCode="DE" term="%22Dampers+%28Mechanical+devices%29%22">Dampers (Mechanical devices)</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+flux%22">Magnetic flux</searchLink><br /><searchLink fieldCode="DE" term="%22Motor+vehicle+springs+%26+suspension%22">Motor vehicle springs & suspension</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: 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]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Mechanical Science & Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1007/s12206-026-0105-4
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      – Code: eng
        Text: English
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        PageCount: 10
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      – SubjectFull: Demagnetization
        Type: general
      – SubjectFull: Dampers (Mechanical devices)
        Type: general
      – SubjectFull: Magnetic flux
        Type: general
      – SubjectFull: Motor vehicle springs & suspension
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      – SubjectFull: Finite element method
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      – TitleFull: Electromagnetic thermal characteristics and demagnetization mechanism of eddy current dampers under strong shock conditions.
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            NameFull: Chen, Yundong
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            NameFull: Li, Zixuan
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            NameFull: Tao, Xuexuan
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            NameFull: Wu, Yi
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            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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