旁通小孔与环形通道并联型轿车磁流变液减振器

郑帅峰1,廖昌荣1,孙凌逸1,吴笃华,张红辉1,董继刚2

振动与冲击 ›› 2016, Vol. 35 ›› Issue (18) : 117-122.

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PDF(1942 KB)
振动与冲击 ›› 2016, Vol. 35 ›› Issue (18) : 117-122.
论文

旁通小孔与环形通道并联型轿车磁流变液减振器

  • 郑帅峰1,廖昌荣1,孙凌逸1,吴笃华,张红辉1,董继刚2
作者信息 +

Car Magneto-rheological Fluid Shock Absorber with Parallel of Micro-bypass and Annular Channels

  • ZHENG Shuaifeng1 LIAO Changrong1 SUN Lingyi1 WU Duhua1 ZHANG Honghui1 DONG Jigang2
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摘要

针对磁流变液减振器体积补偿与活塞换向时阻尼力非圆滑过渡问题,提出一种具有串 级环形通道、并联旁通小孔、浮动活塞充气补偿的磁流变液减振器结构。依据磁流变液流变学测试数据确定Biplastic-Bingham本构模型参数;建立阻尼通道内磁流变液准稳态流动微分方程,结合本构模型得到流经活塞流量与上下腔压力差的关系;研究活塞旁通小孔节流、导向环状间隙节流、浮动活塞补偿和各部件间摩擦力共同作用下阻尼力的计算方法;依据国产某型号轿车悬架技术参数,设计制作磁流变液减振器样机,并对样机进行示功特性测试。测试结果表明:减振器示功曲线圆润饱满,各种励磁电流下磁流变阻尼器的理论阻尼值与测试值能较好吻合。

Abstract

A novel Magneto-rheological Fluid (MRF) shock absorber with annular channel with cascade coils and parallel micro-bypass, gas volume compensation using floating piston, was proposed to solve the problems of inadequate compensation of MRF shock absorber, and the non-smooth transition of damping force when the piston changes direction. Parameters of the Biplastic-Bingham constitutive model were identified by the test of MRF. The quasi-steady differential equations of MRF flow in the annular damping channel were established to obtain the relation between the flow getting through the piston and the pressure difference between the two chambers. The calculation method of MRF damping force was studied, which is in the interaction of throttling effect of the bypass and the guide slot, volume compensation with floating piston and the friction between parts of the shock absorber. A MRF shock absorber was designed and fabricated, according to the suspension technology requirements of a selected domestic automobile and its dynamometer characteristic was tested. The results indicate that the dynamometer card of the shock absorber is full, and the theoretical damping force of the shock absorber under various excitation current are accord with the test data.
 

关键词

磁流变液 / 减振器 / 阻尼力 / 体积补偿

引用本文

导出引用
郑帅峰1,廖昌荣1,孙凌逸1,吴笃华,张红辉1,董继刚2. 旁通小孔与环形通道并联型轿车磁流变液减振器[J]. 振动与冲击, 2016, 35(18): 117-122
ZHENG Shuaifeng1 LIAO Changrong1 SUN Lingyi1 WU Duhua1 ZHANG Honghui1 DONG Jigang2. Car Magneto-rheological Fluid Shock Absorber with Parallel of Micro-bypass and Annular Channels[J]. Journal of Vibration and Shock, 2016, 35(18): 117-122

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