| 薄膜结构分析中的褶皱判别准则及其分析方法 |
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| 引用本文： | 谭锋,杨庆山,李作为. 薄膜结构分析中的褶皱判别准则及其分析方法[J]. 北京交通大学学报(自然科学版), 2006, 30(1): 35-39 |
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| 作者姓名： | 谭锋 杨庆山 李作为 |
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| 作者单位： | 北京交通大学,土木建筑工程学院,北京,100044;北京交通大学,土木建筑工程学院,北京,100044;北京交通大学,土木建筑工程学院,北京,100044 |
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| 基金项目： | 中国科学院资助项目 , 教育部霍英东教育基金 |
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| 摘 要： | 由于膜材不能抗压,在薄膜结构受力分析中膜材有纯拉、单向褶皱和双向褶皱3种状态.当膜材处于褶皱状态时,其受力性能与纯拉状态有很大的差异,在分析中应予以区别,故对膜材3种受力状态的界定成为必要.本文对目前常用的判别柔性材料受力状态的3种准则进行了详细论述,分别讨论了各自的原理及存在的问题,得出主应变准则只能适用于各向同性膜材,主应力-主应变准则对各向同性和正交异性膜材均能适用.并给出了膜材产生褶皱后的处理方法.
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| 关 键 词： | 薄膜结构 褶皱 主应力 主应变 本构矩阵 |
| 文章编号： | 1673-0291(2006)01-0035-05 |
| 收稿时间： | 2005-04-25 |
| 修稿时间： | 2005-04-25 |
Wrinkling Criteria and Analysis Method for Membrane Structures |
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| TAN Feng,YANG Qing-shan,LI Zuo-wei. Wrinkling Criteria and Analysis Method for Membrane Structures[J]. JOURNAL OF BEIJING JIAOTONG UNIVERSITY, 2006, 30(1): 35-39 |
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| Authors: | TAN Feng YANG Qing-shan LI Zuo-wei |
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| Affiliation: | School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | As membrane cannot resist any compression stresses,there are three possible states: taut,wrinkled,and slack when membrane structures been loading.There are many differences between taut behavior and wrinkling behavior of the structure.Therefore it is important to develop effective analysis methods for the evaluation of the taut,wrinkle and slack.Three criteria are discussed.It is shown that principal strain criterion is only suitable for the isotropic membranes and principal stress-principal strain criterion is suitable for both the isotropic and orthotropic membranes.Also,a method for the wrinkling analysis of orthotropic and isotropic membranes was presented. |
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| Keywords: | membrane structures wrinkling principal stress principal strain constitutive matrix |
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