Reliability-Based Optimization of Impeller Structure Using Exponential Function Approximation
This study proposes a decoupling approach based on first-order exponential function approximation for reliability-based optimization. It establishes an explicit relationship between the failure probability and design parameters within only one implementation of reliability analysis, without the repe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/15/12/6856 |
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| author | Haiwei Lin Yiqun Ren Hong Bao Feng Zhang Feifei Zhao Xiya Bao |
| author_facet | Haiwei Lin Yiqun Ren Hong Bao Feng Zhang Feifei Zhao Xiya Bao |
| author_sort | Haiwei Lin |
| collection | DOAJ |
| description | This study proposes a decoupling approach based on first-order exponential function approximation for reliability-based optimization. It establishes an explicit relationship between the failure probability and design parameters within only one implementation of reliability analysis, without the repeated reliability analysis involved in traditional approaches. Then, the obtained explicit exponential function approximation is used to decouple the reliability-based optimization problem and transform it into an equivalent deterministic optimization problem, where a general optimization algorithm can be adopted to solve steadily with a neglectable computational cost. The proposed approach is applied to conduct the reliability-based optimization of a centrifugal compressor impeller design. The results indicate that the proposed method can provide significantly improved computational efficiency while maintaining optimization accuracy comparable to that obtained by traditional double-loop optimization methods. Meanwhile, sensitivity analysis reveals the relative importance of design parameters to structural reliability. |
| format | Article |
| id | doaj-art-e6c1dde9d3a94bafbb4cfeda9cfbb7a6 |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-e6c1dde9d3a94bafbb4cfeda9cfbb7a62025-08-20T02:24:35ZengMDPI AGApplied Sciences2076-34172025-06-011512685610.3390/app15126856Reliability-Based Optimization of Impeller Structure Using Exponential Function ApproximationHaiwei Lin0Yiqun Ren1Hong Bao2Feng Zhang3Feifei Zhao4Xiya Bao5College of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, ChinaXi’an Qinhua Natural Gas Co., Ltd., Xi’an 710071, ChinaCollege of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, ChinaSchool of Mechanics, Civil Engineering & Architecture, Northwestern Polytechnical University, Xi’an 710072, ChinaCollege of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, ChinaSchool of Aerospace Engineering, Xiamen University, Xiamen 361005, ChinaThis study proposes a decoupling approach based on first-order exponential function approximation for reliability-based optimization. It establishes an explicit relationship between the failure probability and design parameters within only one implementation of reliability analysis, without the repeated reliability analysis involved in traditional approaches. Then, the obtained explicit exponential function approximation is used to decouple the reliability-based optimization problem and transform it into an equivalent deterministic optimization problem, where a general optimization algorithm can be adopted to solve steadily with a neglectable computational cost. The proposed approach is applied to conduct the reliability-based optimization of a centrifugal compressor impeller design. The results indicate that the proposed method can provide significantly improved computational efficiency while maintaining optimization accuracy comparable to that obtained by traditional double-loop optimization methods. Meanwhile, sensitivity analysis reveals the relative importance of design parameters to structural reliability.https://www.mdpi.com/2076-3417/15/12/6856impeller structurereliability-based optimizationexponential function approximationdecoupling methodsequential approximation optimization |
| spellingShingle | Haiwei Lin Yiqun Ren Hong Bao Feng Zhang Feifei Zhao Xiya Bao Reliability-Based Optimization of Impeller Structure Using Exponential Function Approximation Applied Sciences impeller structure reliability-based optimization exponential function approximation decoupling method sequential approximation optimization |
| title | Reliability-Based Optimization of Impeller Structure Using Exponential Function Approximation |
| title_full | Reliability-Based Optimization of Impeller Structure Using Exponential Function Approximation |
| title_fullStr | Reliability-Based Optimization of Impeller Structure Using Exponential Function Approximation |
| title_full_unstemmed | Reliability-Based Optimization of Impeller Structure Using Exponential Function Approximation |
| title_short | Reliability-Based Optimization of Impeller Structure Using Exponential Function Approximation |
| title_sort | reliability based optimization of impeller structure using exponential function approximation |
| topic | impeller structure reliability-based optimization exponential function approximation decoupling method sequential approximation optimization |
| url | https://www.mdpi.com/2076-3417/15/12/6856 |
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