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该文考虑退磁场的影响求解了的有限长圆柱超导体的临界态模型，得到了与实验规律相一致的纵向场和横向场下初始磁化曲线、磁滞回线，以及磁通穿透场和饱和磁化强度与几何尺寸的关系表达式，解释了ＨＴＳ块材在一定几何尺寸下钉扎场和磁悬浮力达到饱和的实验现象，屏蔽电流的分布等结果对模拟永磁体场型、优化磁体尺寸和获得最佳磁屏蔽效果有一定的指导意义．
In this paper, we consider the critical state model of a finite-length cylindrical superconductor solved by the effect of demagnetizing field and obtain the initial magnetization curve, hysteresis loop in the longitudinal and transverse fields consistent with the experimental law, as well as the flux permeation field and saturation Magnetization and geometry of the relationship between the expression to explain the HTS block at a certain geometry under the pinning field and the magnetic levitation force to reach the saturation of the experimental phenomena, the distribution of shielding current and other results for the simulation of permanent magnet field type, to optimize the magnet size and obtain The best magnetic shielding effect has some guiding significance.