Numerical and experimental research on buckling design of reaction-wheel’s sealed cowling structure
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摘要: 反作用轮密封罩结构对保证反作用轮正常工作具有重要的作用,其稳定性直接影响反作用轮性能的稳定性.针对某反作用轮密封罩结构,基于通用有限元分析软件ANSYS,利用特征值屈曲分析和非线性屈曲分析两种方法,通过对影响反作用轮密封罩结构稳定性能的关键因素的定量研究,指出壳面形态是影响密封罩稳定性能的关键因素,提出了该类密封罩结构的设计应采用小凸大凹弧的设计方案,说明了两种屈曲分析方法对该类问题的适用范围.反作用轮密封罩的地面模拟试验结果说明了采用非线性屈曲分析方法预测临界屈曲载荷在工程上是可行的.结果为反作用飞轮密封罩结构以及同类产品的设计提供参考.Abstract: It is significant to ensure stability of the sealed cowling structure, which offers a safe work environment for the reaction-wheel. The stability of some kind of sealed cowling structure was quantitatively researched by the eigenvalue buckling technique and nonlinear analysis method based on the general software ANSYS. The shell shape as a key factor to affect the stability of the sealed cowling was pointed. A small protruding arc and large concave arc scheme was presented to design the sealed cowling structures. The application scopes of the eigenvalue buckling analysis and nonlinear buckling analysis were described aimed to the similar structures. The experimental results illustrate the practicability to predict the critical buckling load via nonlinear buckling analysis method in engineering. The researches are useful for the design and buckling analysis of similar structures.
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Key words:
- stability /
- structure safety /
- buckling
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[1] 平菊英,刘胜忠.卫星大动量矩飞轮的设计[J].上海航天, 2002,1:8-12 Ping Juying,Liu Shengzhong.Big-momentum flywheel design for satellite[J]. Aerospace Shanghai,2001,1:8-12(in Chinese) [2] 崔德刚.结构稳定性设计手册[M].北京:航空工业出版社,1996:1-12 Cui Degang. Structure stability design manual[M]. Beijing:Aviation Industry Press,1996:1-12 (in Chinese) [3] 陈铁云,沈惠中.结构的屈曲[M].上海:上海科学技术文献出版社,1993 Chen Tieyun, Shen Huizhong. Buckling of structures[M]. Shanghai: Shanghai Science and Technology Literature Press,1993 (in Chinese) [4] 诸德超,王寿梅.结构分析中的有限元素法[M].北京:北京航空航天大学固体所,1990:354 Zhu Dechao, Wang Shoumei. The finite element method in structure analysis[M].Beijing:Solid Department of Beijing University of Aeronantics and Astronawtics,1990:354(in Chinese) [5] 姜维,闵乐宁.动量轮壳体的设计与分析[J].轴承,2004,12:4-5 Jiang Wei, Min Lening. The design and analysis of shell of momentum wheel[J].Bearing, 2004,12:4-5(in Chinese) [6] 童晓琳.复合材料层合板的非线性后屈曲分析[J].北京航空航天大学, 1994,20(2):174-178 Tong Xiaolin. An analysis of nonlinear post-buckling for composite laminates[J]. Journal of Beijing University of Aeronautics and Astronautics, 1994,20(2):174-178(in Chinese) [7] 朱菊芬,初晓婷.一种改进的弧长法及在结构后屈曲分析中的应用[J].应用数学和力学, 2002, 23(9):961-967 Zhu Jufen,Chu Xiaotin. An improved arc_length method and application in the post_buckling analysis for composite structure[J]. Applied Mathematics and Mechanic,2002, 23(9):961-967(in Chinese) -
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