Details
| Original language | English |
|---|---|
| Article number | 109972 |
| Number of pages | 12 |
| Journal | Reliability Engineering and System Safety |
| Volume | 245 |
| Early online date | 1 Feb 2024 |
| Publication status | Published - May 2024 |
Abstract
Reliability-based design optimization (RBDO) can fulfill both reliability and economic requirements by considering the stochastic properties of structure and excitation. However, the computational efficiency of this optimization is hindered by the nested loops involved in reliability analysis and optimization processes. In order to overcome this limitation, a novel method is proposed for structures subjected to random excitation, which is based on the mapping between operator norm and reliability index. This approach necessitates effectuating the transformation of the optimization objective from reliability indexes to operator norms with a small number of samples, thereby eliminating the laborious process of nested loops. It can effectively solve design optimization problems with reliability constraints, particularly for structures with explicit structural response under random excitation. Four examples are presented to demonstrate the effectiveness and applicability of the proposed method.
Keywords
- Dynamic reliability, Function fitting, Operator norm, Random excitation, Reliability-based design optimization
ASJC Scopus subject areas
- Engineering(all)
- Safety, Risk, Reliability and Quality
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Reliability Engineering and System Safety, Vol. 245, 109972, 05.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - An efficient method for reliability-based design optimization of structures under random excitation by mapping between reliability and operator norm
AU - Jiang, Youbao
AU - Zhang, Xuyang
AU - Beer, Michael
AU - Zhou, Hao
AU - Leng, Yu
N1 - Funding Information: The research is supported by the Provincial Natural Science Foundation of Hunan, China (Grant No.2022JJ10050), and the National Natural Science Foundation of China (Grant No.52378126), and the Provincial Natural Science Foundation of Hunan, China (Grant No.2023JJ40036).
PY - 2024/5
Y1 - 2024/5
N2 - Reliability-based design optimization (RBDO) can fulfill both reliability and economic requirements by considering the stochastic properties of structure and excitation. However, the computational efficiency of this optimization is hindered by the nested loops involved in reliability analysis and optimization processes. In order to overcome this limitation, a novel method is proposed for structures subjected to random excitation, which is based on the mapping between operator norm and reliability index. This approach necessitates effectuating the transformation of the optimization objective from reliability indexes to operator norms with a small number of samples, thereby eliminating the laborious process of nested loops. It can effectively solve design optimization problems with reliability constraints, particularly for structures with explicit structural response under random excitation. Four examples are presented to demonstrate the effectiveness and applicability of the proposed method.
AB - Reliability-based design optimization (RBDO) can fulfill both reliability and economic requirements by considering the stochastic properties of structure and excitation. However, the computational efficiency of this optimization is hindered by the nested loops involved in reliability analysis and optimization processes. In order to overcome this limitation, a novel method is proposed for structures subjected to random excitation, which is based on the mapping between operator norm and reliability index. This approach necessitates effectuating the transformation of the optimization objective from reliability indexes to operator norms with a small number of samples, thereby eliminating the laborious process of nested loops. It can effectively solve design optimization problems with reliability constraints, particularly for structures with explicit structural response under random excitation. Four examples are presented to demonstrate the effectiveness and applicability of the proposed method.
KW - Dynamic reliability
KW - Function fitting
KW - Operator norm
KW - Random excitation
KW - Reliability-based design optimization
UR - http://www.scopus.com/inward/record.url?scp=85184477654&partnerID=8YFLogxK
U2 - 10.1016/j.ress.2024.109972
DO - 10.1016/j.ress.2024.109972
M3 - Article
AN - SCOPUS:85184477654
VL - 245
JO - Reliability Engineering and System Safety
JF - Reliability Engineering and System Safety
SN - 0951-8320
M1 - 109972
ER -