Probability analysis of optimal design for fatigue crack of aluminium plate repaired with bonded composite patch

被引：4
|
作者：
Errouane, H. [1 ]
Deghoul, N. [1 ]
Sereir, Z. [1 ]
Chateauneuf, A. [2 ]
机构：
[1] Univ Sci & Technol Oran, Lab Struct Composites & Mat Innovants, Fac Genie Mecan, USTMB, BP 1505 El Mnaouer, Oran, Algeria
[2] Clermont Univ, EA 3867, LaMI, BP 10448, F-63000 Clermont Ferrand, France
来源：
STRUCTURAL ENGINEERING AND MECHANICS | 2017年 / 61卷 / 03期
关键词：
composites; fatigue; optimizations; numerical methods; structural reliability; simulation; fracture mechanics; GROWTH-BEHAVIOR; OPTIMIZATION; PANELS; FRACTURE;
D O I：
10.12989/sem.2017.61.3.325
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In the present study, a numerical model for probability analysis of optimal design of fatigue non-uniform crack growth behaviour of a cracked aluminium 2024 T3 plate repaired with a bonded composite patch is investigated. The proposed 3D numerical model has advanced in literatures, which gathers in a unique study: problems of reliability, optimization, fatigue, cracks and repair of plates subjected to tensile loadings. To achieve this aim, a finite element modelling is carried out to determine the evolution of the stress intensity factor at the crack tip Paris law is used to predict the fatigue life for a give n crack. To have an optimal volume of our patch satisfied the practical fatigue life, a procedure of optimization is proposed. Finally, the probabilistic analysis is performed in order to a show that optimized patch design is influenced by uncertainties related to mechanical and geometrical properties during the manufacturing process.
引用
收藏
页码：325 / 334
页数：10
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