A magnetorheological valve with both annular and radial fluid flow resistance gaps
A magnetorheological valve with both annular and radial fluid flow resistance gaps
复制标题
一种同时具有环形和径向流体流动阻力间隙的磁流变阀
DOI：
10.1088/0964-1726/18/11/115001
复制
发表时间：
2009-11-01
影响因子：
4.1
通讯作者：
Liao, W. H.
中科院分区：
文献类型：
--
作者：
Wang, D. H.;Ai, H. X.;Liao, W. H.
为了提高磁流变（MR）阀的效率，Ai等人（2006）提出了一种同时具有环形和径向流体流动阻力通道的MR阀，假设环形和径向流体流动间隙处的磁通密度相同。本文设计、制造了一种同时具有环形和径向流体流动阻力通道的磁流变阀，并对其进行了建模和试验。建立了磁流变阀的模型，并通过有限元分析，根据环形和径向流体流动间隙中的平均磁通密度，对磁流变阀的性能进行了理论预测。对所研制的磁流变阀的理论计算结果与实验结果进行了比较。此外，所开发的MR阀的性能进行了理论和实验比较的MR阀只有环形流体流动间隙。结果表明，理论计算结果与实验结果吻合较好。主要归因于径向流体流动间隙，对于不同的阀参数，跨具有环形流体流动间隙和径向流体流动间隙的MR阀的压降大于跨仅具有环形流体流动间隙的MR阀的压降。磁流变阀中的径向流体流动间隙在一定程度上可以达到比环形流体流动间隙更高的效率和更大的可控范围。
In order to increase the efficiency of magnetorheological (MR) valves, Ai et al (2006) proposed an MR valve simultaneously possessing annular and radial fluid flow resistance channels with the assumption that the magnetic flux densities at the annular and radial fluid flow gaps are identical. In this paper, an MR valve simultaneously possessing annular and radial fluid flow resistance channels is designed, fabricated, modeled and tested. A model for the developed MR valve is produced and its performances are theoretically predicted based on the average magnetic flux densities in the annular and radial fluid flow gaps through finite element analysis. The theoretical results for the developed MR valve are compared with the experimental results. In addition, the performances of the developed MR valve are theoretically and experimentally compared with those of the MR valve with only annular fluid flow gaps. It has been shown that the theoretical results match well with the experimental results. Mainly attributed to the radial fluid flow gaps, the pressure drops across the MR valve with both annular and radial fluid flow gaps are larger than those across the MR valve with only annular fluid flow gaps for varying valve parameters. The radial fluid flow gaps in the MR valve can reach a higher efficiency and larger controllable range than those by annular fluid flow gaps to some extent.