HU Guo-liang, LIU Qian-jie, LI Gang, XU Ming. Influence of parameters of magnetorheological damper on vibration attenuation effect of seat suspension system[J]. Journal of Traffic and Transportation Engineering, 2018, 18(1): 101-110. doi: 10.19818/j.cnki.1671-1637.2018.01.010
Citation: HU Guo-liang, LIU Qian-jie, LI Gang, XU Ming. Influence of parameters of magnetorheological damper on vibration attenuation effect of seat suspension system[J]. Journal of Traffic and Transportation Engineering, 2018, 18(1): 101-110. doi: 10.19818/j.cnki.1671-1637.2018.01.010

Influence of parameters of magnetorheological damper on vibration attenuation effect of seat suspension system

doi: 10.19818/j.cnki.1671-1637.2018.01.010
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  • Author Bio:

    HU Guo-liang(1973-), male, professor, PhD, glhu2006@163.com

  • Received Date: 2017-09-02
  • Publish Date: 2018-02-25
  • The relationships among the output damping force and the structural dimension parameters (cylinder inner diameter, piston diameter, piston rod diameter, effective piston length), coil turn, and apparent viscosity of magnetorheological fluid of magnetorheological damper (MRD) were obtained based on the Bingham constitutive mechanical model.The effects of the six parameters of MRD on the output damping force and the dynamic range were analyzed by using the obtained mechanical model.A semi-active seat suspension system model based on MRD was established, and the RMSs of driver acceleration and dynamic displacement of seat cushion were used as the evaluation indexes of vibration attenuation effect, and the RMS of percentage-based slope was put forward to evaluate the influence degrees of MRD parameters.The influences of the six parameters of MRD on the vibration attenuation effect were investigated, and the influence of MRD wear on the vibration attenuation effect was analyzed simultaneously by using the Bingham constitutive inverse mechanical model.Analysis resultshows that the influence factors of piston diameter on the driver acceleration and the dynamic displacement of seat cushion are 4.83 and 5.46, respectively.The influence factors of cylinder inner diameter are 4.45 and 4.75, respectively.The influence factors of coil turn are 0.61 and0.67, respectively.The influence factors of piston rod diameter are 0.53 and 0.59, respectively.The influence factors of effective piston length are 0.51 and 0.56, respectively.So piston diameter has the most important influence on the vibration attenuation effect, the second is cylinder inner diameter, and then followed by coil turn, piston rod diameter and effective piston length.However, the apparent viscosity of magnetorheological fluid has little influence on the vibration attenuation effect.Besides, in order to obtain a better vibration attenuation effect, the maximal output damping force and dynamic range of MRD should be larger enough.

     

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