| 引用本文: | 麻震宇,侯中喜,杨希祥.临近空间大型柔性充气囊体结构特性分析.[J].国防科技大学学报,2015,37(4):25-30.[点击复制] |
| MA Zhenyu,HOU Zhongxi,YANG Xixiang.Structural performance analysis of large-scale flexible inflatable structures for stratospheric airships[J].Journal of National University of Defense Technology,2015,37(4):25-30[点击复制] |
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| 临近空间大型柔性充气囊体结构特性分析 |
| 麻震宇, 侯中喜, 杨希祥 |
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(国防科技大学 航天科学与工程学院， 湖南 长沙 410073)
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| 摘要: |
| 以临近空间平流层飞艇柔性充气囊体为研究对象，根据充气结构设计理论对充气囊体结构的最小压差和应力进行计算，建立平流层飞艇充气囊体结构有限元模型。在模型验证的基础上，采用非线性有限元方法对平流层飞艇充气囊体结构特性进行仿真分析，得到了囊体结构在不同压差和吊舱载荷作用下应力和变形分布及变化规律，并分析了结构加强配置对囊体应力和变形的影响，为平流层飞艇结构设计提供技术支撑和参考依据。 |
| 关键词: 平流层飞艇 柔性充气结构 非线性有限元方法 结构特性 |
| DOI：10.11887/j.cn.201504005 |
| 投稿日期：2015-04-20 |
| 基金项目:国家高分重大专项支持资助项目（GFZX040201） |
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| Structural performance analysis of large-scale flexible inflatable structures for stratospheric airships |
| MA Zhenyu, HOU Zhongxi, YANG Xixiang |
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(College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Taking inflatable structures of stratospheric airships as the main study object, the minimum differential pressure and the stress of inflatable structures were computed according to its design theory and a finite element model of inflatable structure for stratospheric airship was established. On the basis of the model verification, nonlinear finite element method was applied to simulate inflatable structural performance so as to obtain the distribution and change laws of the deformations and stresses of inflatable structure with the variations of pressure load and gondola load. The effects of structural reinforcement devices on the stress and deformation of inflatable structure also were evaluated. The simulation results can serve as reference for the structural design of the stratospheric airship. |
| Keywords: stratospheric airship flexible inflatable structures nonlinear finite element method structural performance |
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