A novel method for high-dimensional reliability analysis based on activity score and adaptive Kriging

Tianzhe Wang, Zequan Chen, Guofa Li, Jialong He, Chao Liu and Xuejiao Du

Reliability Engineering and System Safety, 2024, vol. 241, issue C

Abstract: In structural reliability analysis, Kriging-based adaptive analysis approaches considerably improve the analysis's efficiency by utilizing proper learning strategies. However, the time cost of building a Kriging model may become unacceptable when input spaces have high dimensions. This study proposes a novel method to tackle this difficulty. The basic idea of the proposed method is to implement the adaptive analysis process in the low-dimensional space that activity scores have identified. To determine the activity scores of variables, the active subspace method is implemented. Then, the proposed adaptive analysis method based on the interval squeezing method (ISM) is applied to the suggested low-dimensional space. ISM is designed to improve the accuracy of failure probability with cognitive uncertainty by squeezing its interval. Considering the difficulties associated with applying ISM directly, two variants of ISM are developed: the sequential interval squeezing method (sISM) and parallel interval squeezing method (pISM). Finally, five typical high-dimensional examples (i.e., three numerical and two engineering examples) are investigated to verify the performance of the proposed method. The results indicate that the proposed method can maintain satisfactory accuracy and efficiency.

Keywords: High-dimensional structural reliability analysis; Active subspace method; Activity score; Interval squeezing method; Parallel analysis (search for similar items in EconPapers)
Date: 2024
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:241:y:2024:i:c:s0951832023005574

DOI: 10.1016/j.ress.2023.109643

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