Fatigue Growth Behaviour of Two Interacting Cracks with Different Crack Offset
文献类型：期刊论文
| 作者 | Jin HJ(晋会锦)3; Cui B2; Mao L1 |
| 刊名 | MATERIALS
 |
| 出版日期 | 2019-11-01 |
| 卷号 | 12期号:21页码:9 |
| 关键词 | non-collinear cracks finite element analysis fatigue crack growth interacting behaviour |
| DOI | 10.3390/ma12213526 |
| 通讯作者 | Jin, Huijin(jinhuijin863@163.com) |
| 英文摘要 | Under cyclic fatigue load, multiple cracks would significantly deteriorate the service life of the components with respect to the case of a single crack owing to the crack interaction. The present study aims to explore the effect of crack interaction on the fatigue growth behaviour of samples with different crack offset. In this study, fatigue crack growth tests were performed for samples containing a single crack and non-collinear cracks of different crack offset in an aluminum-lithium alloy. It was shown that the two facing non-collinear cracks changed their growth direction when the cracks were overlapped, resulting in load mode transfers from mode I to I + II mixed mode. Then, the interaction behaviour was studied by establishing the finite element models to calculate the stress intensity factor K of samples with different crack offset. The results indicated that the K decreased, largely owing to the shielding effect as the two cracks overlapped, leading to retardation of crack growth in the position of overlap, especially for the specimens with a small crack offset. It was also shown that the interaction effect could change from positive to negative during the process of the multiple cracks' growth, thus leading to the acceleration or deceleration of crack growth rates, suggesting that the influence of interaction on cracks' growth behaviour could vary with the different stages of crack growth. |
| 分类号 | 二类 |
| WOS关键词 | INTENSITY FACTOR CALCULATION ; MULTIPLE CRACKS ; SIMULATION ; FRACTURE ; JOINTS |
| 资助项目 | National Ministry of Industry and Information Technology Project[M J-F-2011-34] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000502798800067 |
| 资助机构 | National Ministry of Industry and Information Technology Project |
| 其他责任者 | Jin, Huijin |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/81248]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China 2.Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243000, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Jin HJ,Cui B,Mao L. Fatigue Growth Behaviour of Two Interacting Cracks with Different Crack Offset[J]. MATERIALS,2019,12(21):9. |
| APA | 晋会锦,Cui B,&Mao L.(2019).Fatigue Growth Behaviour of Two Interacting Cracks with Different Crack Offset.MATERIALS,12(21),9. |
| MLA | 晋会锦,et al."Fatigue Growth Behaviour of Two Interacting Cracks with Different Crack Offset".MATERIALS 12.21(2019):9. |
入库方式： OAI收割
来源：力学研究所
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