集成BLISCO和iPMA的多学科可靠性设计优化

doi:10.7527/S1000-6893.2014.0047

Abstract

Abstract:

To solve the inefficient problem of reliability-based multidisciplinary design optimization (RBMDO), which is caused by the nested optimization process and repeated iterations of multidisciplinary analysis and reliability analysis, a new method integrating Bi-level integrated system collaborative optimization (BLISCO) and improved performance measure approach (iPMA) is proposed. Firstly, with the sequential idea, the whole process is decoupled and the repeatedly reliability analysis of overall reliability model is avoided. Then, an efficient and suitable BLISCO strategy for dealing with the multidisciplinary design optimization (MDO) of complex engineering system is adopted, which abandons the consistency constraints of collaborative optimization as well as the complex analysis and approximate modeling problems of Bi-level integration system synthesis. Thirdly, the performance measure approach (PMA) is improved by updating angle strategy to evaluate the reliability, which can reduce a great number of multidisciplinary reliability analysis. Finally, a shock absorber design example of landing gear has been implemented to verify the efficiency of the proposed method. The results show that the efficiency of the proposed method has been improved by 30.93% and 19.97% respectively compared to the other two methods. Therefore, it is valuable in engineering design and optimization.

Key words: Bi-level integrated system collaborative optimization, performance measure approach, angle updating, multidisciplinary design optimization, reliability analysis, shock absorber

CLC Number:

V222

LIU Chengwu, JIN Xiaoxiong, LIU Yunping, LIU Jihong. Reliability-based Multidisciplinary Design Optimization Integrating BLISCO and iPMA[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(11): 3054-3063.

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Reliability-based Multidisciplinary Design Optimization Integrating BLISCO and iPMA

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