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Acta Mechanica Solida Sinica

, Volume 19, Issue 3, pp 255–263 | Cite as

Fuzzy reliability-based optimum design of laminated composites

  • Junhong Wei
  • Jianqiao Chen
  • Rui Ge
Article

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.

Key words

fuzzy reliability fuzzy constraint the best safety level fuzzy synthetic evaluation 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2006

Authors and Affiliations

  • Junhong Wei
    • 1
  • Jianqiao Chen
    • 1
  • Rui Ge
    • 1
  1. 1.Department of MechanicsHuazhong University of Science and TechnologyWuhanChina

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