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| 裂纹间距及铺层角度对复合材料分层的影响 | |
| 引用本文： | 范学领,孙秦,原梅妮,菊池正纪.裂纹间距及铺层角度对复合材料分层的影响[J].固体火箭技术,2009,32(3). |
| 作者姓名： | 范学领 孙秦 原梅妮 菊池正纪 |
| 作者单位： | 1. 西北工业大学航空学院,西安710072;西北工业大学材料学院,西安,710072 2. 西北工业大学航空学院,西安,710072 3. 西北工业大学材料学院,西安,710072 4. 东京理科大学理工学部,日本千叶,278-8510 |
| 摘 要： | 分层问题是复合材料层合板最常见问题,据统计约60%的层合板失效都与分层相关.通过基于虚裂纹闭合技术(VCCT)的重合网格法(S-FEM),分析了不同铺层角度及裂纹间距对应变能释放率的影响.由分析结果可看出,应变能释放率随铺层角度增加而减小;在裂纹尖端距离相对较小时,距离对能量释放率的影响要远大于锗层角度变化的影响. |
| 关 键 词： | 重合网格法(S-FEM) 复合材料分层 应变能释放率(SERR) 虚裂纹闭合技术(VCCT) |
The effect of crack distance and fiber angle on delaminations in laminated composites |
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| FAN Xue-ling,SUN Qin,YUAN Mei-ni,KIKUCHI Masanori.The effect of crack distance and fiber angle on delaminations in laminated composites[J].Journal of Solid Rocket Technology,2009,32(3). | |
| Authors: | FAN Xue-ling SUN Qin YUAN Mei-ni KIKUCHI Masanori |
| Institution: | 1.School of Aeronautics;Northwestern Polytechnical University;Xi'an710072;China;2.School of Materials;3.Faculty of Science and Engineering;Tokyo University of Science;278-8510;Japan |
| Abstract: | Based on local mesh refinement around high stress regions,the superposition finite element method(S-FEM) was further developed for delamination behavior and fracture mechanics parameters of fiber-reinforced laminated composites.The effect of fiber angle and distance between two delaminations on the strain energy release rates(SERR) was analyzed.SERR for delamination problems were calculated by using modified virtual crack closure technology(VCCT).It was found that the SERR decrease as the increase of fiber ... |
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