| 引用本文: | 王长国,谢军,谭惠丰.薄膜充气拱褶皱特性分析[J].哈尔滨工业大学学报,2013,45(3):66.DOI:10.11918/j.issn.0367-6234.2013.03.012 |
| WANG Changguo,XIE Jun,TAN Huifeng
.Wrinkling characteristics analysis of inflated membrane arch[J].Journal of Harbin Institute of Technology,2013,45(3):66.DOI:10.11918/j.issn.0367-6234.2013.03.012 |
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| 摘要: |
| 为掌握薄膜充气结构褶皱发生及拓展演化规律,通过数值模拟和实验相结合的方法研究了薄膜充气拱的皱曲问题．据此分析了充气压力、材料厚度、结构尺寸和载荷工况4个参数对薄膜充气拱褶皱特性的影响．在此预报了薄膜充气拱在不同载荷工况下的初始起皱力、初始起皱位置、褶皱扩展演化规律及承载力并开展了薄膜充气拱的皱曲实验,验证了文中的有限元模拟结果．研究结果表明:结构尺寸对薄膜充气拱的褶皱特性影响最大,充气压力次之,材料厚度影响最小;在5种载荷工况中,Fx拉最安全,Fz面外最危险,其他3种载荷介于二者之间． |
| 关键词: 薄膜充气拱 起皱力 起皱位置 褶皱扩展规律 承载力 |
| DOI：10.11918/j.issn.0367-6234.2013.03.012 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(7,9);教育部新世纪优秀人才支持计划资助项目(NCET-11-0807);校基础研究杰出人才培育计划III类资助项目(HIT.BRETIII.201209);航空科学基金资助项目(2010ZA77001);哈尔滨工业大学科研创新基金资助项目(HIT.NSRIF.201156). |
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| Wrinkling characteristics analysis of inflated membrane arch |
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WANG Changguo, XIE Jun, TAN Huifeng
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(Center for Composite Materials and Structures, Harbin Institute of Technology, 150080 Harbin, China)
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| Abstract: |
| Wrinkling characteristics of inflated membrane arch are studied in this paper using numerical and experimental methods to obtain the rules of winkling formation and evolution. The influences of pressure, thickness, structural size and loading cases on the winkling characteristics of inflated membrane arch are analyzed in detail. The wrinkling forces, wrinkling locations, wrinkling evolutions and load-carrying ability of the inflated membrane arch subject to different loading cases are then predicted. The experimental tests verify the accuracy of the numerical results in the end. The results show that the structural size is the most important factor to winkling characteristic of inflated membrane arch, the inflated pressure is the second important factor, and the thickness is the less important factor. In five loading cases, Fx is the safest one, Fz is the most dangerous one, anther three loading cases are just between the two loading cases above. |
| Key words: inflated membrane arch wrinkling force wrinkling location wrinkling evolution load-carrying
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