| FUZZY RELIABILITY-BASED OPTIMUM DESIGN OF LAMINATED COMPOSITES |
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| 作者姓名： | Wei Junhong Chen Jianqiao Ge Rui |
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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： | Project supported by the National Natural Sciences Foundation of China (No.10272049). |
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| 摘 要： | In conventional reliability-based optimum design of structures, the reliability is computed based on the probability assumption, and the design objective and constraint are considered as deterministic ones. In many cases, however, there exist some fuzzy factors in the design objective and constraint functions. In this paper, the fuzzy reliability and fuzzy constraint are introduced to establish the fuzzy reliability-based optimum model for laminated composites. The examples show that the method developed in this paper can give consideration to both the reliability demand and the economic aspect of a structure. Since the fuzzy reliability-based optimum design is a 'soft' design, the present results provide a new methodology for the effective evaluation of structural reliability and bring us an alternative optimum design idea.
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| 关 键 词： | 模糊可靠性 模糊约束性 最佳安全水平 模糊综合评估 |
| 收稿时间： | 2006-01-18 |
| 修稿时间： | 2006-05-15 |
FUZZY RELIABILITY-BASED OPTIMUM DESIGN OF LAMINATED COMPOSITES |
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| Wei Junhong Chen Jianqiao Ge Rui.FUZZY RELIABILITY-BASED OPTIMUM DESIGN OF LAMINATED COMPOSITES[J].Acta Mechanica Solida Sinica,2006,19(3):255-263. |
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| Authors: | Wei Junhong Chen Jianqiao Ge Rui |
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| Institution: | 1. School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore;2. CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China;3. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China;4. National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, China;5. School of Civil Engineering, Hebei University of Engineering, Handan 056038, China;6. Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China;1. Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, PR China;2. School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, PR China;3. Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, PR China;4. CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, PR China;1. Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China;2. School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore;3. Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China;4. CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China;5. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore;6. CAS Key Laboratory of Nanosystem and Hierachical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China |
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| Abstract: | In conventional reliability-based optimum design of structures, the reliability is computed based on the probability assumption, and the design objective and constraint are considered as deterministic ones. In many cases, however, there exist some fuzzy factors in the design objective and constraint functions. In this paper, the fuzzy reliability and fuzzy constraint are introduced to establish the fuzzy reliability-based optimum model for laminated composites. The examples show that the method developed in this paper can give consideration to both the reliability demand and the economic aspect of a structure. Since the fuzzy reliability-based optimum design is a 'soft' design, the present results provide a new methodology for the effective evaluation of structural reliability and bring us an alternative optimum design idea. |
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| Keywords: | fuzzy reliability fuzzy constraint the best safety level fuzzy synthetic evaluation |
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