中国机械工程 ›› 2010, Vol. 21 ›› Issue (03): 285-288.

• 机械基础工程 • 上一篇    下一篇

磁粉夹持系统磁场的有限元分析

唐建宁;周燕飞
  

  1. 南京航空航天大学,南京,210016
  • 出版日期:2010-02-10 发布日期:2010-03-08

Finite Element Analysis of Magnetic Field in Magnetic Powder Clamping System

Tang Jianning;Zhou Yanfei
  

  1. Nanjing University of Aeronautics and Astronautics, Nanjing, 210016
  • Online:2010-02-10 Published:2010-03-08

摘要:

针对不宜采用普通压板夹持的零件,提出了一种通过磁粉传递夹持力夹持工件的设计方案。使用有限元方法对磁粉夹持系统进行二维建模,定性地分析了磁粉填充区域内磁场的分布以及不同磁粉填充参数对磁场分布的影响,并通过实验测试验证了采用二维磁场建模和计算的合理性。结果表明,极大多数的磁力线经过磁粉形成闭合回路;在同等的电流激励下,磁感应强度随着磁粉填充高度的增大而明显降低,却随着磁粉填充长度的增大而增大。结论对磁粉填充参数的合理选择具有指导意义。

关键词:

Abstract:

With regard to parts which were not clamped with common platen, a design of clamping workpiece by magnetic powder was presented. Magnetic field in magnetic powder clamping system was 2D modeled through FEM, and the distribution of magnetic field and effects of different magnetic powder parameters were qualitatively studied. The system's magnetic field model and calculation were verified with measurements. Results show that majorities of magnetic lines form closed circuit thought magnetic powder. Magnetic induction value decreases with the increase of height and increases with the increase of length with same input currents. It is significative to use this conclusion in reasonable selection of magnetic powder parameters. 

Key words: magnetic powder clamping, magnetic field, finite element methodFEM), ANSYS

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