用虚位移法计算静电力公式的讨论  

The Discussion of The Dielectric Medium in Electrostatic Field with Virtual Displacement Method

作　　者：欧阳金华[1] 王佐臣[1] 尹慧[1] 

机构地区：[1]曲阜师范大学物理工程学院,山东省曲阜市273165

出　　处：《曲阜师范大学学报（自然科学版）》2007年第3期78-80,共3页Journal of Qufu Normal University(Natural Science)

摘　　要：用虚位移法计算静电力可分为两种情况:一种为导体的情况;另一种为为介质的情况.给出了用虚位移法计算静电场中电介质受力与用虚位移法计算静电场中导体受力的关系,从而说明了静电场中电介质受力的本质,阐明了静电场中电介质受力的计算可直接应用静电场中导体受力公式的原因,给出了计算介质受力时可以运用计算导体受力公式的条件,并给出了具体的例子进行说明.使电介质受力的计算变得明白、易懂.The computation of the stress in electrostatic field can be divided into two parts：one is the conductor, the other is the dielectric medium. The relation of the stress computation between the conductor system and the dielectric medium system with virtual displacement method in electrostatic field is presented in this paper, the dielectric medium stress essence in the electrostatic field is explained. The reason that in the electrostatic field the dielectric medium stress computation may directly apply in the electrostatic field the conductor stress formula is given. The condition when the computation medium stress may utilize the computation conductor stress formula is deduced. The specific example is given to explain that.

关 键 词：虚位移法 电介质受力 静电场 

分 类 号：O44[理学—电磁学]