Effect of permanent magnet material on failure-pressure of magnetic fluid seal

SN Applied Sciences

De-Cai Li¹  Tong Zhang¹  Yan-Wen Li² 

[1] School of Mechanical, Electronical and Control Engineering, Beijing Jiaotong University;State Key Laboratory of Tribology, Tsinghua University;

关键词: Failure-pressure;    Magnetic fluid seal;    Maximum magnetic energy product;    Permanent magnet;    Sintered Nd-Fe-B;   

DOI  :  10.1007/s42452-021-04734-x

来源: DOAJ

【 摘 要 】

Abstract Material properties of permanent magnet in the magnetic fluid seal are important factors that determine the sealing effect. However, the relationship between the magnetic properties of permanent magnet and the failure-pressure has not been studied quantitatively in the available research. In this work, the relationship between material properties of permanent magnet and the failure-pressure of magnetic fluid seal was obtained from theoretical analysis and numerical simulation. The permanent magnet was changed in materials to calculate the failure-pressures of a typical magnetic fluid seal. The results show that the failure pressure of the magnetic fluid seal increases with the increase of the maximum magnetic energy product of the permanent magnet, but there is a turning point. After that, the failure-pressure decreases as the maximum magnetic energy product increases.

【 授权许可】

Unknown