Structural Engineering and Mechanics

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Time-variant structural fuzzy reliability analysis under stochastic loads applied several times

  • Fang, Yongfeng (School of Mechanical Engineering, Guizhou University of Science Engineering) ;
  • Xiong, Jianbin (School of Computer and Electronic Information, Guangdong University of Petrochemical Technology) ;
  • Tee, Kong Fah (Department of Civil Engineering, University of Greenwich)
  • Received : 2015.02.09
  • Accepted : 2015.05.08
  • Published : 2015.08.10
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Abstract

A new structural dynamic fuzzy reliability analysis under stochastic loads which are applied several times is proposed in this paper. The fuzzy reliability prediction models based on time responses with and without strength degeneration are established using the stress-strength interference theory. The random loads are applied several times and fuzzy structural strength is analyzed. The efficiency of the proposed method is demonstrated numerically through an example. The results have shown that the proposed method is practicable, feasible and gives a reasonably accurate prediction. The analysis shows that the probabilistic reliability is a special case of fuzzy reliability and fuzzy reliability of structural strength without degeneration is also a special case of fuzzy reliability with structural strength degeneration.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

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