To reduce the influence of uncertain factors, a three-dimensional fatigue crack growth prediction method based on consistency maintenance is proposed. Firstly, the crack growth update under complex loads is realized based on XFEM. Subsequently, the life correction method based on the improved particle filter and the path correction method based on the improved maximum tangential stress criterion are proposed. Taking real crack data as input, the accuracy of prediction results is improved from two dimensions of life and path. Finally, five cases are used to verify the proposed framework, which proves that it can realize dynamic tracking of crack growth.

中文翻译：

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基于一致性保留的三维疲劳裂纹扩展预测方法

为减少不确定因素的影响，提出一种基于一致性维持的三维疲劳裂纹扩展预测方法。首先，基于XFEM实现了复杂载荷下的裂纹扩展更新。随后，提出了基于改进粒子滤波的寿命修正方法和基于改进最大切向应力准则的路径修正方法。以真实裂纹数据为输入，从寿命和路径两个维度提高预测结果的准确性。最后，通过五个案例验证了所提出的框架，证明了它可以实现裂纹扩展的动态跟踪。