用于磁探测的铁磁屏蔽体的形状与尺寸设计

摘要

Considering the influence of shape and size of ferromagnetic shields on high precision magnetic detection, the shape and size designing criteria is proposed after analyzing shielding effectiveness and integrated magnetic coefficient of the shield with different shape and size. It can be learned that with same thickness and size, sphere shell's performance is the best, cylinder and ellipsoid shell's are followed and close, side shell's is the worst. With the same thickness and shape, and similar volume, when each size ratio is 1, the shell's performance is the best.%针对高精度磁探测条件下铁磁屏蔽壳体的形状与尺寸设计问题,从屏蔽体的屏蔽效能与在空间产生的附加干扰场出发,对比分析了不同形状、尺寸屏蔽体的屏蔽效能与综合磁化系数,提出了屏蔽壳体形状、尺寸设计依据.按照该依据,在相同厚度、相近尺寸条件下,球壳整体性能最优,圆柱与椭球壳性能相近且次之,方壳性能最差;在相同厚度、相同形状、相近容积条件下,屏蔽体各尺寸比例为1时,壳体整体性能最优.