| RELIABILITY-BASED DESIGN OF COMPOSITES UNDER THE MIXED UNCERTAINTIES AND THE OPTIMIZATION ALGORITHM |
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| 作者单位： | Department of Mechanics，Huazhong University of Science and Technology，Wuhan 430074，China |
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| 基金项目： | 国家自然科学基金，Ph.D Programs Foun-dation of Ministry of Education of China |
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| 摘 要： | This paper proposed a reliability design model for composite materials under the mixture of random and interval variables. Together with the inverse reliability analysis technique, the sequential single-loop optimization method is applied to the reliability-based design of composites. In the sequential single-loop optimization, the optimization and the reliability analysis are decoupled to improve the computational efficiency. As shown in examples, the minimum weight problems under the constraint of structural reliability are solved for laminated composites. The Particle Swarm Optimization （PSO） algorithm is utilized to search for the optimal solutions. The design results indicate that, under the mixture of random and interval variables, the method that combines the sequential single-loop optimization and the PSO algorithm can deal effectively with the reliability-based design of composites.
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| 关 键 词： | 薄片复合材料 反可靠性分析 基础可靠分析 连续单一环路 最优化设计 |
| 收稿时间： | 6 September 2007 |
RELIABILITY-BASED DESIGN OF COMPOSITES UNDER THE MIXED UNCERTAINTIES AND THE OPTIMIZATION ALGORITHM |
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| Authors: | Rui Ge Jianqiao Chen Jnnhong Wei |
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| Institution: | Department of Mechanics, Huazhong University of gcience and Technology, Wuhan 430074, China |
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| Abstract: | This paper proposed a reliability design model for composite materials under the mixture of random and interval variables.Together with the inverse reliability analysis technique, the sequential single-loop optimization method is applied to the reliability-based design of com- posites.In the sequential single-loop optimization,the optimization and the reliability analysis are decoupled to improve the computational efficiency.As shown in examples,the minimum weight problems under the constraint of structural reliability are solved for laminated composites.The Particle Swarm Optimization(PSO)algorithm is utilized to search for the optimal solutions.The design results indicate that,under the mixture of random and interval variables,the method that combines the sequential single-loop optimization and the PSO algorithm can deal effectively with the reliability-based design of composites. |
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| Keywords: | laminated composites inverse reliability analysis reliability-based design sequential single-loop optimization method PSO |
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