| 纤维增强复合材料界面疲劳裂纹扩展的模拟研究 |
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| 引用本文： | 陈艳华, 石志飞, 朱庆杰. 纤维增强复合材料界面疲劳裂纹扩展的模拟研究[J]. 工程力学, 2004, 21(1): 196-201. |
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| 作者姓名： | 陈艳华 石志飞 朱庆杰 |
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| 作者单位： | 1.北方交通大学土木建筑工程学院, 北京, 100044;2. 河北理工学院土建系, 唐山, 063009 |
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| 基金项目： | 国家自然科学基金(50378001)，高等学校优秀青年教师教学科研奖励计划资助项目 |
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| 摘 要： | 脱粘是纤维增强复合材料界面裂纹扩展的主要表现形式.基于剪切筒模型和常用的实验加载方式,研究了纤维增强复合材料中纤维与基体界面在拉-拉循环荷载作用下的裂纹扩展.借助描述疲劳裂纹扩展的Paris公式,得到了疲劳裂纹扩展速率、扩展长度以及界面上摩擦系数与加载次数的关系.在分析中,考虑了疲劳加载引起的脱粘界面的损伤及损伤分布的不均匀性,同时还考虑了材料的泊松效应.
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| 关 键 词： | 纤维增强复合材料 疲劳 数值模拟 界面脱粘 |
| 文章编号： | 1000-4750(2004)01-0196-06 |
| 收稿时间： | 2002-07-05 |
| 修稿时间： | 2003-06-20 |
SIMULATION OF FATIGUE CRACK GROWTH ON THE INTERFACE OF FIBER-REINFORCED COMPOSITES |
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| CHEN Yan-hua, SHI Zhi-fei, ZHU Qing-jie. SIMULATION OF FATIGUE CRACK GROWTH ON THE INTERFACE OF FIBER-REINFORCED COMPOSITES[J]. Engineering Mechanics, 2004, 21(1): 196-201. |
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| Authors: | CHEN Yan-hua SHI Zhi-fei ZHU Qing-jie |
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| Affiliation: | 1.School of Civil Engineering, Northern Jiaotong University, Beijing, 100044, China;2. Hebei Institute of Technology, Tangshan 063009, China |
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| Abstract: | Debonding is a main form of interfacial crack growth of fiber-reinforced composites. Based on the shear-lag model and the usual loading way, the crack growth on the interface of fiber-reinforced composites under tension-tension cyclic loading is studied. According to the Paris law, the relationship between the rate of the interfacial fatigue crack growth and the number of loading cycles, the relationship between the interfacial fatigue crack growth length and the number of loading cycles, and the relationship between the interfacial coefficient of friction and the number of loading cycles are obtained. The degradation of the debonded interface and the non-uniformity of the degradation caused by fatigue loading as well as the effect of the Poisson抯 contraction are considered in the present analysis. |
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| Keywords: | fiber-reinforced composites fatigue numerical simulation interfacial debonding |
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