| 含裂纹复合材料单向板的断裂分析 |
| |
| 引用本文： | 叶林,杨秉宪.含裂纹复合材料单向板的断裂分析[J].航空学报,1988,9(5):230-236. |
| |
| 作者姓名： | 叶林 杨秉宪 |
| |
| 作者单位： | 北京航空学院
(叶林)，北京航空学院(杨秉宪) |
| |
| 摘 要： | 针对纤维增强复合材料单向板的脆性断裂,建立了能量释放率分析模型,提出了断裂准则。并分析了一种玻璃/环氧复合材料单向板的断裂。结果表明:理论预测的临界载荷和实验结果吻合良好。
|
| 关 键 词： | |
| 收稿时间： | 1986-10-25; |
FRACTURE ANALYSIS OF UNIDIRECTIONAL COMPOSITES WITH CRACK |
| |
| Ye Lin and Yang Bingxian.FRACTURE ANALYSIS OF UNIDIRECTIONAL COMPOSITES WITH CRACK[J].Acta Aeronautica et Astronautica Sinica,1988,9(5):230-236. |
| |
| Authors: | Ye Lin and Yang Bingxian |
| |
| Institution: | Beijing Institute of Aeronautics and Astronautics |
| |
| Abstract: | A model of energy release rate for fracture in unidirectional fiber-reinforced composite materials is presented. From the observations in experiments, a fracture criterion for crack initiation in off-axis unidirectional composite materials is proposed. It includes two assumptions: ( 1 ) Crack initiation takes place in the direction of fibers; (2) Rapid crack growth occurs when the energy release rate reaches a critical value, G= G. The model is also used to analyze the mixed-mode fracture of a kind of glass-epoxy unidirectional composite with crack. The results indicate that the loads corresponding to fracture predicted by the model when crack orients at some angle with respect to the fiber direction agree well with the experimental results. |
| |
| Keywords: | composite materials unidirectional composites mixedmode fracture energy release rate glass-epoxy |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《航空学报》浏览原始摘要信息 |
| 点击此处可从《航空学报》下载免费的PDF全文 |
