| 空间薄膜结构的褶皱形变预测 |
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| 引用本文： | 王长国,杜星文,万志敏.空间薄膜结构的褶皱形变预测[J].力学与实践,2006,28(6):37-41,45. |
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| 作者姓名： | 王长国 杜星文 万志敏 |
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| 作者单位： | 哈尔滨工业大学复合材料与结构研究所,哈尔滨,150001 |
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| 摘 要： | 空间充气结构技术是一项全新的空间结构构建技术,基于该技术的空间充气结构是未来空间任务的主要需求对象．该结构主要由薄膜构成,因此结构形面精度的保持是关键问题．褶皱是薄膜特有的现象,它的存在会严重影响结构形面精度,因此进行褶皱研究很有必要．根据屈曲理论联合薄膜褶皱的实际构型建立了薄膜结构褶皱的预测模型,分析了矩形平面薄膜受面内水平剪切情况下的褶皱,得到了褶皱幅度和褶皱波长以及薄膜结构产生褶皱时的临界压缩应力,通过与已有文献结果及本文实验结果的比较验证了该分析方法的有效性和结果的正确性．
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| 关 键 词： | 空间充气结构 形面精度 薄膜 褶皱 屈曲 |
| 收稿时间： | 2005-12-08 |
| 修稿时间： | 2005-12-082006-05-08 |
PREDICTION OF WRINKLE DEFORMATIONS IN THE SPACE MEMBRANE STRUCTURES |
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| WANG Changguo,DU Xingwen,WAN Zhimin.PREDICTION OF WRINKLE DEFORMATIONS IN THE SPACE MEMBRANE STRUCTURES[J].Mechanics and Engineering,2006,28(6):37-41,45. |
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| Authors: | WANG Changguo DU Xingwen WAN Zhimin |
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| Affiliation: | Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The space inflatable structure is a new construction technology and is the main demanding object in the future space activities. The inflatable structure is mainly made up of membrane; therefore, the maintenance of the structural surface accuracy is one of the most important problems. Wrinkling is the unique characteristic of the flexible membranes, and the wrinkles degrade the surface accuracy and the structural performance, so, the study on wrinkles in membrane structures is desirable and essential. In this paper, a prediction model of wrinkles is proposed, based on the buckling theory, and the wrinkles, including the wrinkle amplitude, wrinkle wavelength and the critical compressive stress, in a rectangular membrane subjected to in-plane horizontal shearing loads are predicted using the method proposed in the present paper. The predicted results show good agreement with our recent experiments and the reported data. |
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| Keywords: | space inflatable structure surface accuracy membrane wrinkling buckling |
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