| 编织复合材料的裂纹损伤与增长行为研究 |
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| 引用本文： | 姚学锋,林碧森,张志勇,金观昌.编织复合材料的裂纹损伤与增长行为研究[J].工程力学,2002,19(5):118-122. |
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| 作者姓名： | 姚学锋 林碧森 张志勇 金观昌 |
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| 作者单位： | 1. 清华大学工程力学系,北,京100084
2. 深圳中华复合材料制品有限公司,广东,518010 |
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| 基金项目： | 国家自然科学基金研究项目资助(19902008)，航空航天基金项目资助 |
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| 摘 要： | 本文利用数字散斑相关方法对玻璃纤维/环氧树脂编织结构复合材料在三点弯曲载荷作用下裂纹损伤演化、增长的力学行为进行了实验研究，记录了裂纹尖端局域场形变的散斑图像，提取了不同加载水平下的位移场，确定了裂纹扩展过程中其尖端的应力强度因子与能量释放率变化规律；从编织复合材料的宏细观方面，分析了裂纹的损伤变形及其扩展机理。
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| 关 键 词： | 编织复合材料 数字散斑相关技术 断裂参数 损伤与演化 |
| 文章编号： | 1000-4750(2002)05-118-05 |
CRACK DAMAGE AND GROWTH BEHAVIOR OF BRAIDED COMPOSITE |
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| YAO Xue-feng,LIN Bi-sen,ZHANG Zhi-yong,JIN Guan-chang.CRACK DAMAGE AND GROWTH BEHAVIOR OF BRAIDED COMPOSITE[J].Engineering Mechanics,2002,19(5):118-122. |
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| Authors: | YAO Xue-feng LIN Bi-sen ZHANG Zhi-yong JIN Guan-chang |
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| Affiliation: | YAO Xue-feng1,LIN Bi-sen1,ZHANG Zhi-yong2,JIN Guan-chang1 |
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| Abstract: | Damage evolution and growth of Glass/Epoxy braided composites with crack subjected to three-point-bending load are studied by means of digital speckle correlation method. A series of speckle images with crack tip deformation information are recorded, and the displacement fields are obtained at different load levels. Some fracture parameters such as stress intensity factor and energy release rate of crack tip are determined. The fracture mechanisms of braided composite are analyzed by both macro and micro mechanics. |
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| Keywords: | Braided composites digital speckle correlation fracture parameters damage and evolution |
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