Modelling and optimization of high frequency hardening characteristics of magneto rheological damper

ZUO Shu-guang MAO Yu WU Xu-dong JIANG Wei-xu WEI Xi-jin

Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (10) : 120-125.

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PDF(2166 KB)
Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (10) : 120-125.

Modelling and optimization of high frequency hardening characteristics of magneto rheological damper

  •  ZUO Shu-guang    MAO Yu   WU Xu-dong  JIANG Wei-xu  WEI Xi-jin 
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Abstract

In order to reflect high-frequency characteristics of magneto rheological damper(MRD) exactly, based on the model of MRD considering inertia and compressibility, a modified high-frequency model was proposed in which local loss of flow was introduced and pressure distribution in the liquid chamber of MRD was taken into consideration as well. To verify the accuracy of the model, CFD simulation of the flow in MRD by using dynamic layering algorithm to achieve dynamic mesh was performed. Simulation results indicated: the model proposed in this paper was able to reflect dynamic hardening in high frequency of MRD and predict peak frequency and peak value in the high frequency characteristic curve more accurately. Last based on the model structure parameters of MRD were optimized aiming to improve dynamic hardening in the prerequisite of ensuring low frequency performance, which provides the references for the design and analysis in the application of high frequency.

Key words

MR damper / high frequency hardening / pressure distribution / CFD / structure improvement

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ZUO Shu-guang MAO Yu WU Xu-dong JIANG Wei-xu WEI Xi-jin . Modelling and optimization of high frequency hardening characteristics of magneto rheological damper[J]. Journal of Vibration and Shock, 2016, 35(10): 120-125

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