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- Title
A unified reliability evaluation framework for aircraft turbine rotor considering multi-site failure correlation.
- Authors
Huang, Ying; Zhang, Jian-Guo; Song, Lu-Kai; Li, Xue-Qin; Bai, Guang-Chen
- Abstract
Multiple dangerous sites often coexist in complex structures like aircraft turbine rotors, and its failure-correlated reliability evaluation usually occurs the thorny problems of high-efficacy computing and correlation quantification. In this paper, a novel unified reliability evaluation framework is proposed: to meet the high-efficacy computing demand of multi-site reliability evaluation, a new optimized Kriging surrogate-based improved importance sampling (OKS-IIS) method is first presented; furthermore, to quantify the failure correlation relationships among multiple dangerous sites, a novel failure correlation analysis (FCA) strategy is further developed. A typical reliability evaluation of high-pressure turbine rotor with multiple dangerous sites is selected, to validate the effectiveness of the proposed framework. Methods comparison show that the OKS-IIS method can improve computing efficiency while keeping computing accuracy, and the FCA strategy can accurately quantify the multi-site failure correlation. The current efforts would shed a light on the complex reliability evaluation problems involving failure correlation.
- Publication
Structural & Multidisciplinary Optimization, 2023, Vol 66, Issue 7, p1
- ISSN
1615-147X
- Publication type
Article
- DOI
10.1007/s00158-023-03628-3