大学物理 ›› 2020, Vol. 39 ›› Issue (06): 14-17.doi: 10.16854 /j.cnki.1000-0712.190432

• 教学讨论 • 上一篇    下一篇

均匀带电椭球的静电自能 ———“‘带电厚椭球壳空腔内的电场’一文的补充”续

于凤军,汤振杰,田俊龙,鞠林   

  1. 安阳师范学院物理与电气工程学院,河南安阳455000
  • 收稿日期:2019-09-25 修回日期:2019-11-05 出版日期:2020-06-20 发布日期:2020-06-17
  • 作者简介:于凤军( 1959—) ,男,河南安阳人,安阳师范学院物理与电气工程学院教授,主要从事理论物理、天体力学研究和教学工作.
  • 基金资助:
    国家自然科学基金( 11961131010) 资助项目; 河南省科技攻关项目( 172102210092) 资助

Electrostatic self-energy of a uniformly charged ellipsoid ———Sequel to“A supplement to the article‘Electric field in the cavity of a charged thick ellipsoidal shell’”

YU Feng-jun,TANG Zhen-jie,TIAN Jun-long,JU Lin   

  1. College of Physics and Electrical Engineering,Anyang Normal University,Anyang,Henan 455000,China
  • Received:2019-09-25 Revised:2019-11-05 Online:2020-06-20 Published:2020-06-17

摘要: 计算一般形状的均匀带电椭球的静电自能,该椭球是由非导体构成的. 方法是把该椭球分割成无限多个与其共轴的、等偏心率的薄椭球壳,通过考虑各个薄椭球壳的自能和它们之间的相互作用能,导出均匀带电椭球的静电自能公式.

关键词: 带电椭球, 静电自能, 相互作用能, 电势, 薄椭球壳

Abstract: The electrostatic self-energy of a uniformly charged ellipsoid is calculated. The ellipsoid is composed

of non-conductor. The method is to divide the thick ellipsoid into infinite thin coaxial ellipsoidal shells with the

same eccentricity ratios. The electrostatic self-energy formula for a uniformly charged ellipsoid of general shape is

obtained by considering the respective self-energy of every thin shell and interaction energy for each other.

Key words: charged ellipsoid, self-energy, interaction energy, potential, thin ellipsoidal shells