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Volume 38 Issue 4
Apr.  2012
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Journal of Beijing University of Aeronautics and Astronautics  > 2012  >  (4): 525-528,534.
Wang Xinghao, Ma jiming, Zeng Shengkui, et al. Hybrid reliability analysis method based collaborative optimization[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, (4): 525-528,534. (in Chinese)
Citation: Wang Xinghao, Ma jiming, Zeng Shengkui, et al. Hybrid reliability analysis method based collaborative optimization[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, (4): 525-528,534. (in Chinese)
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Hybrid reliability analysis method based collaborative optimization

  • School of Reliability and Systems Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 24 Dec 2010
  • Publish Date: 30 Apr 2012
    Abstract
  • The reliability analysis in the multidisciplinary design optimization (MDO) process causes great computational cost. Aiming to this problem,two kinds of existing reliability analysis methods were integrated into the collaborative optimization(CO), and hybrid reliability analysis based CO method was proposed. This method analyzes the reliability in the subsystem of CO model, and before each reliability analysis, the distance between the iteration point and constrained boundary was estimated. For the point near the constrained boundary,the first order reliability method was applied to analyze the reliability, while the mean value method was applied to analyze the reliability approximately for the other points to reduce the unnecessary analysis cost, then this hybrid reliability analysis process was integrated into the CO framework. Experimental results show that the hybrid reliability analysis based CO method improves the optimization efficiency without decreasing the accuracy of reliability and it has practical significance for engineering application.

     

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