| 计及界面作用的单向复合材料统计强度 |
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| 引用本文： | 曾庆敦,凌玲,王志力.计及界面作用的单向复合材料统计强度[J].华南理工大学学报(自然科学版),1997(8). |
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| 作者姓名： | 曾庆敦 凌玲 王志力 |
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| 作者单位： | [1]华南理工大学交通学院 [2]广东工业大学机械电子工程系 [3]华南建设学院（西院）建筑设计院 |
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| 摘 要： | 对单向纤维增强复合材料的纵向拉伸破坏进行了细观统计分析。基于随机扩大临界核统计模型，结合含纤维／基体界面损伤的应力集中分析结果，导出了具有界面剪切强度效应的复合材料的强度分布函数和破坏准则，得到了复合材料拉伸强度与界面剪切强度的关系，为复合材料微结构的优化设计提供了重要的理论依据。文中用已有的实验证实了本文方法和结果的正确性和合理性，并定量地讨论了最优界面粘合问题。
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| 关 键 词： | 复合材料 界面 强度 优化设计 统计分析／随机临界核 |
STATISTICAL STRENGTH OF UNIDIRECTIONAL COMPOSITES WITH THE INTERFACE EFFECT |
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| Zeng Qingdun,Ling Ling,Wang Zhili.STATISTICAL STRENGTH OF UNIDIRECTIONAL COMPOSITES WITH THE INTERFACE EFFECT[J].Journal of South China University of Technology(Natural Science Edition),1997(8). |
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| Authors: | Zeng Qingdun Ling Ling Wang Zhili |
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| Abstract: | A microscopic statistical analysis of the longitudinal tensile failure of unidirectionally fiber reinforced composites is performed.Based upon the randomly enlarging critical core model in conjunction with the results of the stress concentration analysis with the interfacial damage of fiber/matrix,the function of the strength distribution and the failure criterion of composites with the effect of the interfacial shear strength are derived and the relation between the tensile strength and the interfacial shear strength of composites is obtained.The results provide the important theoretical basis for the optimal design of the microstructure of composites.In this paper,the correctness and reasonableness of the present methods and results are verified by the existing experiments.Finally the question of optimal interfacial bonding is discussed quantitatively. |
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| Keywords: | composite materials interface strength optimal design statistical analysis/random critical core |
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