| 三单元立方体卫星的结构特性分析 |
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| 引用本文： | 赵星,张翔.三单元立方体卫星的结构特性分析[J].航天器环境工程,2018,35(2):165-169. |
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| 作者姓名： | 赵星 张翔 |
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| 作者单位： | 南京理工大学 机械工程学院, 南京 210094,南京理工大学 机械工程学院, 南京 210094 |
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| 摘 要： | 立方体卫星凭借着其质轻、体积小、灵活性强等特点得到了快速发展。文章以南京理工大学研制的三单元立方体卫星为研究对象,采用有限元法对其结构进行仿真计算,验证了整星模态频率满足刚度要求。基于仿真结果对PVC板进行了合理的改进,结果显示立方体卫星3个方向的一阶频率分别提高了36.8%、14.4%和36.3%,同时改善了PVC板的振动特性,为后续整星振动试验的开展及其他立方体卫星的结构设计提供了参考依据。
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| 关 键 词： | 立方体卫星 结构设计 有限元分析 模态分析 |
| 收稿时间： | 2017/12/13 0:00:00 |
| 修稿时间： | 2018/3/14 0:00:00 |
Structural dynamics analysis of three-unit CubeSat |
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| ZHAO Xing and ZHANG Xiang.Structural dynamics analysis of three-unit CubeSat[J].Spacecraft Environment Engineering,2018,35(2):165-169. |
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| Authors: | ZHAO Xing and ZHANG Xiang |
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| Institution: | School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China and School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
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| Abstract: | The CubeSat has been developing rapidly due to the advantages of light weight, small size and high flexibility. In this paper, the three-unit CubeSat developed by Nanjing University of Science and Technology is studied. The finite element method is used to simulate its structure, which verifies that the modal frequency of the structure meets the rigidity requirement. Based on the simulation results, the PVC board is improved reasonably. The primary frequencies of the CubeSat in the three orthogonal directions are increased by 36.8%, 14.4% and 36.3%, respectively. At the same time, the vibration characteristics of the PVC board are improved. The research provides a basis for the vibration test and the structural design of other CubeSats. |
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| Keywords: | CubeSat structure design finite element analysis modal analysis |
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