Mixed uncertainty analysis for dynamic reliability of mechanical structures considering residual strength

被引：30
作者：
Liu, Xintian [1 ]
Yu, Xueguang [1 ]
Tong, Jiachi [1 ]
Wang, Xu [1 ]
Wang, Xiaolan [1 ]
机构：
[1] Shanghai Univ Engn Sci, Sch Mech & Automot Engn, Shanghai, Peoples R China
来源：
RELIABILITY ENGINEERING & SYSTEM SAFETY | 2021年 / 209卷
关键词：
Dynamic reliability; Residual strength; Uncertain parameters; Interval analysis method; DESIGN OPTIMIZATION; INTERVAL; SYSTEM;
D O I：
10.1016/j.ress.2021.107472
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Aiming at the uncertainty of parameters in structural dynamic reliability analysis model, such as randomness, interval and fuzziness, a dynamic reliability model with mixed uncertain parameters is proposed in this paper. Based on entropy equality information, random and fuzzy variables are transformed. And the different possible uncertainties of parameters are analyzed, four reliability index analysis models are given under different parameters. Probability and interval reliability analysis are adopted to solve the reliability index, and the influence of parameter type on reliability index is discussed. The dynamic reliability index of 45# steel (test specimens) under fatigue load is calculated to verify the feasibility of the proposed method.
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页数：9
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