A novel negative stiffness magnetic spring design for vehicle seat suspension system

Lixin Tu, Donghong Ning, Shuaishuai Sun, Wenxing Li, Hua Huang, Mingming Dong, Haiping Du

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


By employing a couple of columnar magnets with a specific arrangement, a negative stiffness magnetic spring (NSMS) is designed, modelled and then experimentally validated in this paper. Such a magnetic spring with negative stiffness can be used for a semi-active seat suspension to achieve vibration reduction on vehicle drivers. Extensive simulation analysis and experimental validation based on static and vibration responses reveal that NSMS brings the beneficial low dynamics stiffness for seat suspension and reduces the resonance frequency vibration during the vertical excitation without compromising loading capacity. Besides, a semi-active seat suspension system with the NSMS can achieve excellent performance of low-frequency vibration suppression (around 28.8 % acceleration reduction under random excitation).

Original languageEnglish
Article number102370
Publication statusPublished - 2020 Jun
Externally publishedYes


  • Low-frequency vibration
  • Magnetic spring
  • Negative stiffness
  • Seat suspension system

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering


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