临近空间大型柔性充气囊体结构特性分析
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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。
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.
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.
引文
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[2]Liao L,Pasternak I.A review of airship structural research and development[J].Progress in Aerospace Sciences,2009,45(4):83-96.
[3]Rehmet M A,Krplin B H,Epperlein F,et al.Recent developments on high altitude platforms[C]//Proceedings of3rd International Airship Convention and Exhibition,2000:B-8.
[4]Smith I S Jr,Lee M.The hi Sentinel airship[C]//Proceedings of 7th AIAA Aviation Technology,Integration and Operations Conference,AIAA 2007-7748,2007.
[5]Chen W J,Xiao W W,Krplin B,et al.Structural performance evaluation procedure for large flexible airship of HALE stratospheric platform conception[J].Journal of Shanghai Jiaotong University(Science),2007,E-12(2):293-300.
[6]高海健,陈务军,付功义,等.平流层平台柔性飞艇结构弹性分析理论[J].上海交通大学学报,2010,44:1583-1587.GAO Haijian,CHEN Wujun,FU Gongyi,et al.Structural analysis oriented engineering elastic theory for flexible airship of stratospheric platform[J].Journal of Shanghai Jiaotong University,2010,44(11):1583-1588.(in Chinese)
[7]高海健.大型平流层平台柔性飞艇结构分析理论与特性研究[D].上海:上海交通大学,2010.GAO Haijian.Structural analysis theory and performance research for large flexible airship of stratospheric platform[D].Shanghai:Shanghai Jiaotong University,2010.(in Chinese)
[8]高海健,陈务军,付功义.平流层验证飞艇结构体系比较研究[J].宇航学报,2011,32(4):713-720.GAO Haijian,CHEN Wujun,FU Gongyi.Comparison investigation for architecture of stratospheric demonstration airship[J].Journal of Astronautics,2011,32(4):713-720.(in Chinese)
[9]高海健,陈务军,付功义,等.考虑气压效应平流层平台柔性飞艇变形分析方法与特征研究[J].应用力学学报,2012,29(4):374-379.GAO Haijian,CHEN Wujun,FU Gongyi,et al.Deformation analysis method and performance evaluation for flexible airship of stratospheric platform considering pressure effects[J].Chinese Journal of Applied Mechanics,2012,29(4):374-379.(in Chinese)
[10]席俊波.飞艇囊体几何非线性有限元分析[D].西安:西北工业大学,2006.XI Junbo.Nonliner finite element analysis of airship envelope[D].Xi’an:Northwestern Polytechnical University,2006.(in Chinese)
[11]杨留义.囊体结构设计及其气弹特性计算分析[D].哈尔滨:哈尔滨工业大学,2012.YANG Liuyi.Structural design and numerical aeroelastic analysis of airship envelope[D].Harbin:Harbin Institute of Technology,2012.(in Chinese)
[12]黄迪,赵海涛,邱野,等.平流层飞艇蒙皮强度建模与仿真研究[J].计算机仿真,2013,30(1):150-153.HUANG Di,ZHAO Haitao,QIU Ye,et al.Modeling and simulation analysis of stratospheric airship envelope[J].Computer Simulation,2013,30(1):150-153.(in Chinese)
[13]刘龙斌,吕明云,肖厚地,等.基于压差梯度的平流层飞艇艇囊应力计算和仿真[J].北京航空航天大学学报,2014,4(1):1-6.LIU Longbin,LYU Mingyun,XIAO Houdi,et al.Calculation and simulation of stratospheric airship capsule stress considering the pressure gradient[J].Journal of Beijing University of Aeronautics and Astronautics,2014,4(1):1-6.(in Chinese)
[14]谭惠丰,王超,王长国.实现结构轻量化的新型平流层飞艇研究进展[J].航空学报,2010,31(2):257-264.TAN Huifeng,WANG Chao,WANG Changguo.Progress of new type stratospheric airships for realization of lightweight[J].Acta Aeronaltica et Astronaltica Sinica,2010,31(2):257-264.(in Chinese)
[15]谭惠丰,孟松鹤,王超.新型空中展开飞艇[C]//2007年中国浮空器大会论文集,北京,2007:17-21.TAN Huifeng,MENG Songhe,WANG Chao.A new type deployable airship[C]//Proceedings of Aerostat Conference of China 2007,Beijing,2007:17-21.(in Chinese)
[16]汪逸然.系绳增强充气结构承载性能分析[D].哈尔滨:哈尔滨工业大学,2013.WANG Yiran.Bearing capacity analysis of inflatable structures with enhancing tethers[D].Harbin:Harbin Institute of Technology,2013.(in Chinese)
[17]Fodaro D.Employ of the pneumatic structures in the unconventional airship design[C]//Proceedings of AIAA Balloon Systems Conference,AIAA 2007-2628,2007.