| 空间薄膜反射镜圆薄膜模态分析 |
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| 引用本文： | 石广丰,金光,齐迎春.空间薄膜反射镜圆薄膜模态分析[J].长春理工大学学报,2010,33(1):60-62. |
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| 作者姓名： | 石广丰 金光 齐迎春 |
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| 作者单位： | 长春理工大学机电工程学院,长春,130022;中国科学院长春光学精密机械与物理研究所,长春,130033;吉林大学生物与农业工程学院,长春,130025 |
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| 基金项目： | 国家863计划资助项目(2007AA12Z113) |
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| 摘 要： | 空间薄膜反射镜是一种空间应用新技术。聚酰亚胺圆薄膜的模态分析能够给薄膜反射镜夹持结构的设计和动态特性分析提供重要依据。通过对薄膜振动贝塞尔方程的求解,得到了300mm聚酰亚胺圆薄膜的前四阶振动频率,并利用ANSYS有限元仿真软件进行了模拟验证,求得了前四阶振型和相应振动频率。薄膜反射镜的固有频率很低,一阶固有频率为9.3Hz左右。这对于反射镜夹持结构和整个光学系统设计,以及载荷的施加、面形调整等提出了特定要求,以避免发生共振影响工作。
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| 关 键 词： | 空间薄膜反射镜 聚酰亚胺 振动模态 贝塞尔方程 ANSYS |
Circular Membrane Modal Analysis of Space Membrane Reflector |
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| SHI Guangfeng,JIN Guang,QI Yingchun.Circular Membrane Modal Analysis of Space Membrane Reflector[J].Journal of Changchun University of Science and Technology,2010,33(1):60-62. |
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| Authors: | SHI Guangfeng JIN Guang QI Yingchun |
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| Affiliation: | 1.School of Electro-mechanical Engineering;Changchun University of Science and Technology;Changchun 130022;2.Changchun Institute of Optics;Fine Mechanics and Physics Chinese Academy of Sciences;Changchun 130033;3.School of Biological and Agricultural Engineering Jinlin University;Changchun 130025 |
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| Abstract: | Space membrane reflector is a new technology in space application. Modal analysis of a circular polyimide membrane can provide a reference for structure design and dynamic analysis of the membrane reflector. The four orders vibration frequencies of a 300mm circular polyimide membrane is computed by Bezier equation,and the results are analyzed and tested in ANSYS. Native frequence of the membrane reflector is very low with the first order frequence about 9.3 Hz. All the work in this paper will give some cert... |
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| Keywords: | space membrane reflector polyimide vibration mode Bezier equation ANSYS |
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