基于压差梯度的平流层飞艇艇囊应力计算和仿真

刘龙斌; 吕明云; 肖厚地; 曹帅

doi:10.13700/j.bh.1001-5965.2013.0629

基于压差梯度的平流层飞艇艇囊应力计算和仿真

doi: 10.13700/j.bh.1001-5965.2013.0629

北京航空航天大学航空科学与工程学院, 北京 100191

基金项目: 航空科学基金资助项目(2012ZA51009)

详细信息

作者简介:
刘龙斌(1986-),男,湖南邵阳人,博士生,longbuaa@sina.com.

中图分类号: V214.8
计量
- 文章访问数: 1162
- HTML全文浏览量: 42
- PDF下载量: 715
- 被引次数: 0
出版历程
- 收稿日期: 2013-11-04
- 网络出版日期: 2014-10-20

Calculation and simulation of stratospheric airship capsule stress considering the pressure gradient

School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 平流层飞艇体积庞大,艇囊表面曲率小,因而蒙皮材料的局部应力集中极易导致飞艇艇囊蒙皮发生过大变形而迅速超压损伤破坏.基于飞艇艇囊内外压力压差梯度载荷条件,建立飞艇艇囊蒙皮受内外压差真实工况下环向与轴向应力的理论计算模型,构建飞艇蒙皮应力分析的Von Mises强度准则.并采用ABAQUS有限元软件非线性仿真艇囊蒙皮分别在超压300,500,800 Pa载荷下的各点环向的Von Mises应力状况.仿真结果与理论模型计算的应力值基本保持一致,飞艇艇囊蒙皮环向Von Mises应力呈现随压差梯度增大而递增的规律,而轴向Von Mises应力大小由环向Von Mises应力、蒙皮局部经纬向曲率共同决定,且两方向的Von Mises应力均与超压载荷大小成正相关关系,为飞艇艇囊蒙皮超压应力评估和强度计算提供基础性研究.
- 平流层飞艇 /
- 压差梯度 /
- 蒙皮 /
- 强度准则 /
- 超压
Abstract: The capsule volume of stratospheric airships was usually too huge and the surface curvature of buoyancy capsule was small, so local stress concentration of airship envelope could easily lead to large transformation and cause the capsule to overpressure damage and blast quickly. Basing on the pressure gradient loading condition of the inside and outside of the airship buoyancy capsule, the theoretical calculation method of the hoop and axial stress was developed under the real overpressure load working situation, and the Von Mises stress strength criterion was proposed as well. The finite element (FEM) analysis software ABAQUS was used to simulate the hoop Von Mises stress under the different overpressure loads of 300, 500 and 800 Pa respectively. The contrastive results show the Von Mises values between the simulation and theoretical calculation are in consistent nearly, and the hoop Von Mises stress of airship capsule envelope increases with the increasing of pressure gradient, While the axial Von Mises stress of airship overpressure capsule is determined by the hoop Von Mises stress and envelope local curvature of the warp and weft directions together, moreover, the two kinds of Von Mises stress associated with the overpressure load is positively correlated at different directions, which provides the effective basis research of stress evaluation and strength calculation for the airship envelope overpressure.
- stratospheric airship /
- pressure gradient /
- envelope /
- strength criterion /
- overpressure

HTML全文

参考文献(16)

[1]	胡国昌,夏辉. 吴美平.平流层飞艇静升力分析[J].计算机仿真,2010,27(12):60-64 Hu Guochang,Xia Hui,Wu Meiping.Analysis on static lift of stratospheric airship[J].Computer Simulation,2010,27(12):60-64(in Chinese)
[2]	Qiu Y, Wang Q,Zhao H.Applications of FBG sensors for airship structural health monitoring[C]//2012 Symposium on Photonics and Optoelectronics,SOPO 2012.Washington D C:IEEE Computer Society,2012:1-3
[3]	Colozaa A, Dolce J.Initial feasibility assessment of a high altitude long endurance airship[R].NASA/CR-2003212724,2003
[4]	陈务军,董石麟. 德国(欧洲)飞艇和高空平台研究与发展[J].空间结构,2006,12(4):3-7 Chen Wujun,Dong Shilin.Research and development of airship and high altitude long endurance platform in Germany(Europe)[J].Spatial Structures,2006,12(4):3-7(in Chinese)
[5]	刘建闽, 薛雷平,鲁传敬.平流层飞艇绕流场与柔性变形的数值模拟[J].力学季刊,2006,27(3):440-448 Liu Jianmin,Xue Leiping,Lu Chuanjing.Coupling computation of ambient flow and deformation of elastic membrane body[J].Chinese Quarterly of Mechanics,2006,27(3):440-448(in Chinese)
[6]	王兆希,窦宝峰, 逄型召.平流层浮空器用柔性复合材料的断裂性能[J].复合材料学报,2011,28(2):211-216 Wang Zhaoxi,Dou Baofeng,Pang Xingzhao.Fracture properties of flexible composites from aerostat[J].Acta Materiae Compositae Sinica,2011,28(2):211-216(in Chinese)
[7]	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)
[8]	梁浩全,祝明, 姜光泰,等.基于改进CO-RS的平流层飞艇总体设计与优化[J].北京航空航天大学学报,2013,39(2):239-243 Liang Haoquan,Zhu Ming,Jiang Guangtai,et al.Conceptual design optimization of stratosphere airship based on improved CO-RS[J].Journal of Beijing University of Aeronautics and Astronautics,2013,39(2):239-243(in Chinese)
[9]	Gillett. Airship technology[M].Beijing:Science Press,2007:121-418
[10]	Smith Jr F A. Advanced finite element analysis for the skyhook-Boeing HLV aircraft[C]//Mechanic. Simulia Customer Conference.London:Boeing Company,2009:1-120
[11]	Wang Q, Chen J,Fu G,et al.A methodology for optimization design and analysis of stratosphere airship[J].Aeronautical Journal,2009,113(1146):533-540
[12]	Alfonso M N, Raquel S R,Alejo L M.Dynamic plantar pressure analysis and midterm outcomes in percutaneous correction for mild hallux valgus[J].Journal of Orthopaedic Research November,2011,1:1700-1706
[13]	曹旭,王伟志, 顾正铭.平流层浮空器蒙皮材料力学性能细观分析[C]//2008年中国浮空器大会论文集.长沙:航空工业出版社,2008:290-295 Cao Xu,Wang Weizhi,Gu Zhengming.Study on the microcosmic mechanical property of stratosphere airship composite envelope[C] //Chinese Aerstats Conference(2008).Changsha:Aviation Industry Press,2008:290-295(in Chinese)
[14]	王文隽,李勇, 姚伟,等.飞艇气囊压力与蒙皮张力的估算[J].宇航学报,2007,28(5):1109-1112 Wang Wenjun,Li Yong,Yao Wei,et al.Estimation of the ralationship between the pressure in airship ballonet and the tension in its envelop[J].Journal of Astronautics,2007,28(5): 11091112(in Chinese)
[15]	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)
[16]	肖治垣, 郦正能.径向变体飞艇总体参数估算方法[J].北京航空航天大学学报,2012,38(5):688-691 Xiao Zhiyuan,Li Zhengneng.Parameters estimation method of radial transformable airship[J].Journal of Beijing University of Aeronautics and Astronautics,2012,38(5):688-691(in Chinese)