摘要
A numerical and experimental investigation was conducted to determine the effect of interference-fit size on damage behaviour of bolted single-lap carbon fibre-reinforced plastic/Ti alloy composite structure. Three-dimensional finite element analysis (FEA) was conducted for interference-fit bolt installation process considering the friction coefficient and nonlinear shear stress-strain relationship, and damage sub-routine was used to predict composite progressive failure region and failure type in single-lap bolted-joints. Experiments involving three interference-fit sizes of 0.4%, 2.1% and 3.0% were designed to verify the FEA. In addition, micro-analysis results show that damage type during interference-fit bolt inserting process predicted by FEA was consistent with experimental results. Various types of micro-scale damage around the hole after interference bolt installation were analysed and characterised, and the effects of interference-fit size on structure strength were analysed in view of micro-scale damage. An appropriate interference-fit size can prompt the carbon fibre-reinforced plastic hole to become 'brush-like' and exhibit 'soften' and 'buffering' effect that improves the bearing capacity. In this paper, interference fit of 2.1% exhibits the maximum bearing damage strength.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 1359-1371 |
| 页数 | 13 |
| 期刊 | Fatigue and Fracture of Engineering Materials and Structures |
| 卷 | 38 |
| 期 | 11 |
| DOI | |
| 出版状态 | 已出版 - 11月 2015 |