Structural hybrid reliability analysis under multi-source uncertainties utilizing universal grey numbers
Multi-source uncertainties are inevitable in actual engineering structures,which may affect structural performance profoundly.A structural hybrid reliability analysis approach in presence of multi-source uncertainties is investigated in this paper.Probabilistic,fuzzy and interval variables are employed to model the multi-source uncertainties.The main contribution is the use of universal grey numbers to tackle the problem of interval extension which may lead to excessively conservative estimation.By using 3σ criterion and entropy principle,we can transform both of probabilistic and fuzzy variables into interval variables.Then we are able to compute structural reliability on the basis of interval model which is described by universal grey number.A numerical example is provided to verify the accuracy of proposed method.
multi-source uncertainties hybrid reliability universal grey number 3σ criterion equal entropy principle
Xiaoyue Chen Jie Liu Guilin Wen
State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,410082,China;Key Laboratory of Advanced Design and Simulation Techniques for Special Equipment of Department of Ministry of Education,Hunan University,410082,China
国内会议
辽宁丹东
英文
1-4
2016-08-05（万方平台首次上网日期，不代表论文的发表时间）