| 割口单向叠层板的拉伸应力集中与强度 |
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| 引用本文： | 曾庆敦,吴光春.割口单向叠层板的拉伸应力集中与强度[J].固体力学学报,2006,27(1):86-90. |
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| 作者姓名： | 曾庆敦 吴光春 |
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| 作者单位： | 华南理工大学交通学院,广州,510640 |
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| 基金项目： | 国家自然科学基金(10372032)，广东省自然科学基金(031394)资助 |
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| 摘 要： | 基于剪滞理论,建立一种分层剪滞模型,分析了含割口的单向叠层板在拉伸载荷作用下的应力重新分布问题,获得了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强度,得到了与现有实验较吻合的结果.
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| 关 键 词： | 割口单向叠层板 拉伸破坏 剪滞分析 统计分析 应力集中 强度 |
| 修稿时间： | 2004年12月12 |
TENSILE STRESS CONCENTRATIONS AND STRENGTHS FOR NOTCHED UNIDIRECTIONAL LAMINATES |
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| Zeng Qingdun,Wu Guangchun.TENSILE STRESS CONCENTRATIONS AND STRENGTHS FOR NOTCHED UNIDIRECTIONAL LAMINATES[J].Acta Mechnica Solida Sinica,2006,27(1):86-90. |
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| Authors: | Zeng Qingdun Wu Guangchun |
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| Abstract: | Based on the shear-lag theory,the stress redistributions for notched unidirectional laminates under tension were analyzed by establishing a layering shear-lag model.The 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 strengths of notched unidirectional laminates were studied by using a statistical fracture theory.The present results have a relatively good agreement with the existing experimental values. |
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| Keywords: | notched unidirectional laminate tensile failure shear-lag analysis statistical analysis stress concentration strength |
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