| 空间可展结构非线性动力学特性实验研究 |
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| 引用本文： | 阎绍泽,陈鹿民,吴德隆,金德闻.空间可展结构非线性动力学特性实验研究[J].宇航学报,2002,23(4):1-3. |
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| 作者姓名： | 阎绍泽 陈鹿民 吴德隆 金德闻 |
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| 作者单位： | 1. 清华大学精密仪器与机械学系,北京,100084
2. 北京宇航系统工程设计部,北京,100076 |
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| 基金项目： | 国家自然科学基金 ( 5 990 5 0 16 )，国家航天 86 3高技术项目 ( 86 3-2 -2 -4 -2 )资助 |
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| 摘 要： | 由于可展结构在运动过程中的时变性，特别是干扰所引起的非线性动力学特性，涉及许多深层次尚在探讨的动力学问题。为了考察间隙非线性对系统动力学性能的影响，本文对空间可展结构进行了动力学实验研究。实验结果表明理想结构与实验结构存在较大差异，铰接间隙等非理想机械因素导致系统复杂的非线性动力学行为，使系统的动力学性能下降。
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| 关 键 词： | 空间可展结构 非线性动力学特性 实验研究 振动 伸展结构 |
| 文章编号： | 1000-1328(2002)04-0001-03 |
| 修稿时间： | 2001年8月30日 |
Experimental studies of behavior of nonlinear dynamics of a deployable structure for spacecraft |
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| YAN Shao-ze ,CHEN Lu-min ,WU De-long ,JIN De-wen.Experimental studies of behavior of nonlinear dynamics of a deployable structure for spacecraft[J].Journal of Astronautics,2002,23(4):1-3. |
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| Authors: | YAN Shao-ze CHEN Lu-min WU De-long JIN De-wen |
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| Institution: | YAN Shao-ze 1,CHEN Lu-min 1,WU De-long 2,JIN De-wen 1 |
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| Abstract: | Due to time-variability of the topological structures of a deployable structure for spacecraft during its motion,especially the nonlinear dynamic performances caused by external disturbances,many problems of the deployable structure dynamics have to be developed further.In this paper,an experimental system for a deployable structure was built,and a series of the experimental studies were performed to validate the influence of the joints' clearances on the response of the structure.The experimental results show that differences of dynamic performances between the ideal structure and real one are evident.Complex nonlinear dynamic behavior of the structure was observed,and dynamic performances of the structure were reduced by nonideal mechanical factors such as clearances. |
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| Keywords: | Deployable structure Clearance Vibration Nonlinear dynamics |
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