磁场结构对径向流磁流变阀动态性能的影响

发布时间：2018-03-02 07:17

本文关键词： 隔磁径向流磁流变阀不隔磁径向流磁流变阀有限元分析压降响应　出处：《农业机械学报》2017年09期 　论文类型：期刊论文

【摘要】：针对不隔磁径向流磁流变阀磁力线只在径向阻尼间隙中垂直分布导致压降小的不足,提出并设计了一种隔磁径向流磁流变阀。通过设置隔磁零件来改变磁场结构,使磁力线形成蜿蜒式走向而被引导到不隔磁径向流磁流变阀中未被利用的轴向阻尼间隙,从而增加磁流变阀中产生磁流变效应的工作区域,在不增大阀尺寸前提下实现增加液流通道有效阻尼长度的目的。采用有限元法对外形尺寸和液流通道结构完全相同的不隔磁和隔磁磁流变阀进行建模仿真分析,以观察磁流变阀隔磁和不隔磁结构对磁力线路径和磁感应强度分布规律的影响。同时在动态性能测试平台上对不隔磁和隔磁径向流磁流变阀压降及响应性能进行试验测试对比。仿真和试验结果均表明:隔磁径向流磁流变阀由于设置了隔磁零件,可使磁力线在轴向和径向阻尼间隙中均匀分布,使其压降比不隔磁磁流变阀的压降大。另外,由于轴向阻尼间隙受到磁场的作用,隔磁磁流变阀具有更大的上升响应时间。
[Abstract]:In view of the shortage that the magnetic line of the non-magnetic radial flow magnetorheological valve only distributes vertically in the radial damping gap, the pressure drop is small, a magnetic separation radial flow magnetorheological valve is proposed and designed. The magnetic field structure is changed by setting the magnetic isolating parts. Causes the magnetic force line to form the meandering direction and is guided to the unused axial damping gap in the non-magnetic radial flow magnetorheological valve, thus increasing the working area of the magnetorheological valve where the magnetorheological effect is produced, The purpose of increasing the effective damping length of the liquid flow channel is realized without increasing the valve size. The modeling and simulation analysis of the non-magnetic insulation and the magnetorheological valve with the same shape size and the same structure of the liquid flow channel are carried out by using the finite element method. In order to observe the influence of magnetorheological valve magnetic insulation and magnetic isolation structure on the magnetic field line path and magnetic induction intensity distribution, the pressure drop and response performance of the magnetic field line and magnetic flux radial flow rheological valve were studied on the dynamic performance test platform. The simulation and test results show that the magnetic separation radial flow magnetorheological valve is equipped with magnetic insulation parts. The magnetic force line can be evenly distributed in the axial and radial damping gap, and the pressure drop is larger than that of the non-magnetorheological valve. In addition, due to the effect of magnetic field on the axial damping gap, the magnetorheological valve has a longer rise response time.
【作者单位】：华东交通大学载运工具与装备教育部重点实验室;
【基金】：国家自然科学基金项目(51765016、51475165、11462004) 江西省主要学科学术和技术带头人计划项目(20162BCB22019) 江西省创新驱动5511科技创新人才项目(20165BCB18011)
【分类号】：TH134

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