PSI - Issue 75

Thomas Constant et al. / Procedia Structural Integrity 75 (2025) 660–676 Author name / Structural Integrity Procedia 00 (2025) 000–000

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5. Conclusion

This paper presents an extension of the AK-SM method tailored for the reliability analysis of fatigue-loaded system under several operational conditions. By combining the selection of a critical driving configuration with the AK-SM imputation strategy, the proposed approach, named AK-SM-CCA, seeks to reduce the number of calls to the most expensive model m A without compromising the accuracy of the failure probability estimation. The first obtained numerical results showed the potential of the method. The AK-SM-CCA approach is believed to o ff er a well balanced compromise between the computational cost and the accuracy. However, the assumption of a single critical driving configuration may be a limiting factor and not always hold in some applications. As a perspective, an approach based on multiple or adaptive critical driving configurations could be developed, though it would increase the number of calls to the full numerical chain. This extra cost could be mitigated through parallelization. Additional challenges may also arise when multiple critical locations on the system have to be considered, paving the way for future work towards the generalization of the proposed approach.