大学物理 ›› 2012, Vol. 31 ›› Issue (11): 43-43.

• 著者文摘 • 上一篇    下一篇

变化磁场作用下椭球体涡流磁矩的计算

周建军 林春生 杨振宇   

  1. 海军工程大学兵器工程系,武汉430033
  • 出版日期:2012-11-25 发布日期:2012-11-20

Calculation of ellipsoid eddy-current moment under varying magnetic field

  • Online:2012-11-25 Published:2012-11-20

摘要: 推导在变化磁场作用下椭球体内的涡流以及涡流磁矩的计算公式.从公式可以看出,椭球体的涡流磁矩与外磁场随时间的导数成正比,比例系数是与椭球体形状,尺寸,材料有关的常数.由涡流磁矩可以计算出涡流磁场的空间分布.

关键词: 椭球体, 涡流, 涡流磁矩, 涡磁系数

Abstract: The calculation formula of ellipsoid eddy-current and eddy-current moment under varying magnetic field are derived.It is known from the formula that the moment is proportional to the derivative of the magnetic field with time.The coefficient is a constant related to the ellipsoid's shape,size,and material.Then it can be used to calculate the eddy-current fields in the space by the moment.

Key words: ellipsoid, eddy-current, eddy-current moment, eddy-current coefficient

中图分类号: 

  • O441.2