磁流体-泡沫金属减振器磁场强度有限元分析

FEA of magnetic field intensity of magnetic fluid-foam metal shock absorber

磁流体-泡沫金属减振器与单纯磁流体减振器相比具有适用于更宽频率范围振动的控制并且可提供较大可控阻尼力的特点。在磁流体-泡沫金属减振器的设计与制造中,其内部磁场分布规律是影响减振效果的一个重要因素。为了探讨其磁场分布规律及影响因素,利用ANSYS软件对该新型减振器的磁场进行有限元分析,结果表明,在新型减振器的活塞外圆柱表面开环槽可以提高阻尼通道内的磁场强度,且适当地增加所开环槽的数量可使阻尼通道内的磁场强度提高幅度增大。该研究结论对磁流体-泡沫金属减振器的设计与制造具有一定的参考价值。

Compared with the simple magnetic fluid damper,the magnetic fluid-foam metal shock absorber is featured with applicable for controlling more wider range of frequency vibration and possible to provide more controllable damping force.During the design and manufacture of magnetic fluid-foam metal shock absorber,the distribution regularities of internal magnetic field is an important factor impacting the damping effect.In order to discuss its distribution regularities of magnetic field and influencing factors,the finite element analysis on the magnetic field of this new type shock absorber is carried out by using the ANSYS in this paper.The results show that process ring grooves on the external cylindrical surface of piston can improve magnetic field intensity in the damp channels,and the range of magnetic field intensity in the damp channels can also be improved by increasing the number of ring grooves properly.This research conclusion has certain reference value for designing and manufacturing the magnetic fluid-foam metal shock absorber.