Three-dimensional fatigue crack growth prediction method based on consistency retention

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.

Automated summary

In this paper, a three-dimensional fatigue crack growth prediction method based on consistency maintenance is proposed to reduce the influence of uncertain factors. Through steps such as crack growth update, life correction, and path correction, the accuracy of prediction results is improved and dynamic tracking of crack growth is achieved.