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利用面向对象设计思想将岩土力学中数值流形方法的物理覆盖系统抽象为独立的数据类，在此基础上完成了物理覆盖系统的自动剖分算法。对裂缝切割的连续材料，在裂缝的扩展过程中能自动生成正确的流形单元。算例表明，本算法是可靠和有效的。
The object-oriented design method is used to abstract the physical coverage system of numerical manifold method in geomechanics into independent data classes. Based on this, the automatic subdivision algorithm of physical coverage system is completed. The continuous material that cleaves the crack can automatically generate the correct manifold unit during the crack propagation. The example shows that this algorithm is reliable and effective.