现代防御技术 ›› 2021, Vol. 49 ›› Issue (6): 29-35.DOI: 10.3969/j.issn.1009-086x.2021.06.006

• 飞行器技术 • 上一篇    下一篇

两种充气碟形囊体结构力学性能比较研究

张清南, 李昂, 陈晓岚, 范伯钧, 李佳欣   

  1. 北京电子工程总体研究所,北京 100854
  • 收稿日期:2021-04-22 修回日期:2021-07-14 发布日期:2022-01-12
  • 作者简介:张清南(1989-),女,甘肃白银人。工程师,博士,主要从事飞行器结构设计与强度分析。通信地址:100854 北京市142信箱30分箱 E-mail:zhang_qingnan@ 126.com

Mechanical Performance Comparison of Two Types of Inflated Saucer-Shaped Airbag Structure

ZHANG Qing-nan, LI Ang, CHEN Xiao-lan, FAN Bo-jun, LI Jia-xin   

  1. Beijing Institute of Electronic System Engineering,Beijing 100854,China
  • Received:2021-04-22 Revised:2021-07-14 Published:2022-01-12

摘要: 以平流层柔性充气囊体为研究对象,对分隔帘布式和高压气柱式2种不同内部结构的充气碟形囊体结构力学性能进行了研究。建立了基于膜单元和非线性接触算法的有限元模型,得到了2种构型囊体结构在相同压差及承载作用下的变形及应力分布,并通过试验结果的对比分析验证了仿真分析的准确性。研究结果显示,高压气柱式囊体结构在气柱表压较大时刚度更好且应力分布更均匀,能有效避免褶皱等失效模式。

关键词: 平流层飞艇, 充气碟形囊体, 力学性能, 压差, 褶皱

Abstract: In order to study the mechanical performance of the flexible inflated airship working in the stratospheric,two types of inflated saucer-shaped airbag structure,which are separate-curtain and high-pressure air-tube,are researched.A finite-element model for the airbag is established based on the membrane element and nonlinear contact algorithm.Based on this model,the deformation and stress distribution of two types of airbag under the same inflation pressure and load are analyzed and compared.The validity of the simulation analysis is verified by the comparative analysis of the experimental results.The results show that the high-pressure air-tube structure shows better rigidity and more uniform stress distribution with relatively higher inflation pressure of air-tube,which can effectively avoid the failure such as the membrane wrinkles.

Key words: stratospheric airship, inflated saucer-shaped airbag, mechanical performance, differential pressure, membrane wrinkles

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