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| 引用本文： | 李云良,王长国,谭惠丰.????????????????????[J].力学与实践,2007,29(6):17-22. |
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| 作者姓名： | 李云良 王长国 谭惠丰 |
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| 作者单位： | 哈尔滨市南岗区一匡街2号哈工大科学园3010信箱 哈尔滨工业大学，复合材料与结构研究所，黑龙江 哈尔滨市南岗区一匡街2号哈工大科学园3010信箱 |
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| 摘 要： | 建立了薄膜褶皱分析的力学模型,并基于张力场理论和稳定性理论分析了褶皱区域的应
力应变关系. 在此基础上提出了褶皱薄膜动态分析的NBA-UM(nonlinear
buckling analysis-update matrix)分析方法，分析了褶皱薄膜振动特性. 结
果表明，褶皱使薄膜产生``过度收缩'
现象，并改变了薄膜中的应力分布. 褶皱对薄膜的振动特性有很大的影响，大幅度的褶皱改
变了薄膜振动的固有频率和模态形式. 提出的NBA-UM分析方法可以有效地预报褶皱薄膜
的动态行为.
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| 关 键 词： | 空间结构 薄膜 褶皱 振动 |
| 收稿时间： | 2007-01-04 |
| 修稿时间： | 2007-04-24 |
ANALYSIS OF WRINKLES' INFLUENCES ON MEMBRANE'S VIBRATION CHARACTERISTICS |
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| LI Yunliang,WANG Changguo,TAN Huifeng.ANALYSIS OF WRINKLES'''' INFLUENCES ON MEMBRANE''''S VIBRATION CHARACTERISTICS[J].Mechanics and Engineering,2007,29(6):17-22. |
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| Authors: | LI Yunliang WANG Changguo TAN Huifeng |
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| Abstract: | A mechanical model of membrane wrinkle is established in this paper.Relationship between the strains and the stresses in the wrinkled regions is analyzed based on the tension field theory and the stability theory.The NBA-UM (nonlinear buckling analysis-update matrix) method is proposed for the dynamic analysis of membrane wrinkles,and the study on the vibration characteristics of the membrane.The result shows that"excess shrink"phenomena is due to wrinkles,which in turn change the stress distribution in the membrane. Wrinkles greatly influence the vibration characteristics of the membrane,and large amplitude wrinkles will change the natural frequencies and modal forms of the membrane.In conclusion,it is shown that the NBA-UM method can effectively predict the dynamic behaviors of membrane wrinkles. |
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| Keywords: | NBA-UM |
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