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介绍了数值流形方法的基本原理及其在模拟裂纹扩展中的实现过程，并就两个算例进行了分析，结果表明流形元方法的有效性。
The basic principle of numerical manifold method and its implementation in simulated crack propagation are introduced. Two examples are analyzed, and the results show the effectiveness of the manifold element method.