充气囊体力学性能试验研究
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摘要
针对充气囊体在较高气压下具有显著的非线性大变形特征、且囊体为柔性结构变形测量困难的问题,采用非接触式全场应变摄影测量系统,测试了充气囊体在不同充气压力作用下的变形特性,得到了充气囊体表面不同区域薄膜应力随囊体尺寸、充气压力变化规律,验证了充气囊体在载人条件下的承压安全性,并得到了不同尺寸充气囊体的压力容限。
It is difficult to measure the deformability of the balloon when the balloon has significant nonlinear deformation characteristics under high pressure and when the balloon is flexible. A noncontact full-field strained photogrammetry system was used in this study. The deformation characteristics of the inflatable balloon under different inflation pressures were tested,and the variations of the membrane stress in different areas of the balloon surface with the balloon size and inflation pressure were obtained. The pressure bearing safety of the balloon under manned conditions was verified and the pressure tolerances of different size balloons were obtained.
It is difficult to measure the deformability of the balloon when the balloon has significant nonlinear deformation characteristics under high pressure and when the balloon is flexible. A noncontact full-field strained photogrammetry system was used in this study. The deformation characteristics of the inflatable balloon under different inflation pressures were tested,and the variations of the membrane stress in different areas of the balloon surface with the balloon size and inflation pressure were obtained. The pressure bearing safety of the balloon under manned conditions was verified and the pressure tolerances of different size balloons were obtained.
引文
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[6]徐彦,王伟东,王珲玮,等.柔性充气囊体结构的动力学响应和姿态分析[J].上海航天,2017,34(2):169-176.Xu Yan,Wang Weidong,Wang Wei,et al.Dynamic response and attitude analysis of flexible inflatable balloon structures[J].Shanghai Aerospace,2017,34(2):169-176.(in Chinese)
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[2]Cadogan D,Stein J,Grahne M.Inflatable composite habitat structures for lunar and mars exploration[J].Acta Astronautica,1999,44(7-12):399-406.
[3]Kennedy K J.Inflatable habitats technology development[R]//Mars Greenhouses:Concepts and Challenges,NASA/TM-2000-208577,2000:64-76.
[4]Sinn T,Doule O.Inflatable structures for Mars base 10[C]//42nd International Conference on Environmental Systems.San Diego:AIAA 2012-3557,2012
[5]Valle G,Edgecombe J,Fuente H D L.Damage tolerance testing of a NASA Trans Hab derivative woven inflatable module[C]//50thAIAA/ASME/ASCE/AHS/ASC Structures,Structural Dynamics,and Materials Conference.Palm Springs:AIAA 2009-2167,2009.
[6]徐彦,王伟东,王珲玮,等.柔性充气囊体结构的动力学响应和姿态分析[J].上海航天,2017,34(2):169-176.Xu Yan,Wang Weidong,Wang Wei,et al.Dynamic response and attitude analysis of flexible inflatable balloon structures[J].Shanghai Aerospace,2017,34(2):169-176.(in Chinese)
[7]唐明章,竺梅芳.一种测试柔性充气展开结构应力应变的新型传感器系统[C]//第二十三届全国空间探测学术交流会论文摘要集,2010.Tang Mingzhang,Zhu Meifang.A new type of sensor system for measuring the stress and strain of flexible inflatable deployable structure[C]//20thNational Space Exploration Academic Conference Summary Collection,2010.(in Chinese)
[8]陈帅,李斌,杨智春.薄膜充气结构承弯性能的理论分析方法[J].机械强度,2011,33(3):403-410.Chen Shuai,Li Bin,Yang Zhichun.Theoretical methods of bending characteristics analysis of membrane inflatable structures[J].Mechanical Strength,2011,33(3):403-410.(in Chinese)
[9]Sosa E M,Wong C S,Adumitroaie A,et al.Finite element simulation of deployment of large-scale confined inflatable structures[J].Thin-Walled Structures,2016,104:152-167.