| 界面破坏对割口单向叠层板的应力集中及强度的影响 |
| |
| 引用本文： | 曾宪伟,吴光春,朱兴元,曾庆敦.界面破坏对割口单向叠层板的应力集中及强度的影响[J].玻璃钢/复合材料,2010(5). |
| |
| 作者姓名： | 曾宪伟 吴光春 朱兴元 曾庆敦 |
| |
| 作者单位： | 华南理工大学土木与交通学院,广州,510640 |
| |
| 基金项目： | 国家自然科学基金资助项目，广东省自然科学基金资助项目 |
| |
| 摘 要： | 基于剪滞理论,建立一种计及界面损伤的分层剪滞模型,分析了含割口的单向叠层板在拉伸荷载作用下的应力重新分布问题,据此可求得界面损伤区长度和割口前缘完整纤维的应力集中因子.在此基础上,采用细观统计破坏理论,研究了割口单向叠层板的拉伸破坏机理和强度,定量获得了残余拉伸强度与界面剪切强度的关系,所得结果与现有实验吻合较好.结果表明,应力集中和强度与割口长度及界面剪切强度有关;适宜的界面黏结,具有较高的残余拉伸强度.
|
| 关 键 词： | 单向叠层板 界面损伤 应力集中 强度 剪滞分析 统计分析 |
THE INFLUENCE OF INTERFACIAL FAILURE ON THE STRESS CONCENTRATIONS AND STRENGTHS FOR NOTCHED UNIDIRECTIONAL LAMINATES |
| |
| ZENG Xian-wei,WU Guang-chun,ZHU Xing-yuan,ZENG Qing-dun.THE INFLUENCE OF INTERFACIAL FAILURE ON THE STRESS CONCENTRATIONS AND STRENGTHS FOR NOTCHED UNIDIRECTIONAL LAMINATES[J].Fiber Reinforced Plastics/Composites,2010(5). |
| |
| Authors: | ZENG Xian-wei WU Guang-chun ZHU Xing-yuan ZENG Qing-dun |
| |
| Affiliation: | ZENG Xian-wei,WU Guang-chun,ZHU Xing-yuan,ZENG Qing-dun(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China) |
| |
| Abstract: | Based on the shear-lag theory,a layering shear-lag model taking into account the interfacial damage was proposed and the stress redistributions for notched unidirectional laminates under tension were analyzed,from which both the length of interfacial damage area and stress concentration factors in intact fibers at root of the notch were obtained.On the basis of the knowledge of these stress redistributions,the tensile failure mechanism and strengths of notched unidirectional laminates were studied by using ... |
| |
| Keywords: | notched unidirectional laminate interfacial damage stress concentration strength shear-lag analysis statistical analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
