舰船上层建筑模型的等效磁化率研究

研究了感应磁场计算中的等效磁化率的概念．１个有规则的内部有纵隔和横隔的多面钢质上层建筑模型可以用１个同一几何形状的实心钢体来替代，只是其磁化率需换成等效磁化率．计算结果表明，这种等效替代所得的计算误差较小．这个概念能应用于实际舰船感应磁场的计算机辅助分析的建模，以减少计算单元与缩短计算时间

The Study of Equivalent Susceptibility of the Superstructure Model of a Vessel

In this paper during computation of the inductive magnetic field of the superstructure model of ships, the equivalent susceptibility is studied. A superstructure model which is made of a regular polyhedron of steel with vertical and horrizontal partitions can be replaced by a solid steel polyhedron of the same shape. But the susceptibility of the latters should be converted to an equivalent susceptibility. The computation shows that this conversion can arrive at smaller computation error. This idea can be used to analyse the inductive magnetic field of a real vessel by the computer so that the amount of computing time will be reduced and computing procedure will be shortened.