| 空间可展机构弹性动力学特性研究 |
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| 引用本文： | 张春,王三民,袁茹.空间可展机构弹性动力学特性研究[J].机械科学与技术(西安),2007,26(11):1479-1482,1489. |
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| 作者姓名： | 张春 王三民 袁茹 |
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| 作者单位： | 西北工业大学,机电学院,西安,710072;西北工业大学,机电学院,西安,710072;西北工业大学,机电学院,西安,710072 |
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| 摘 要： | 将多级剪刀机构与复式螺旋机构组合,提出了一种新型的径射状可展天线伸展机构。采用动力有限元法建立空间可展天线伸展机构的单支机构动力学模型,采用振型叠加法对该机构进行弹性动力学分析。分析后发现,各阶固有频率随展开角度的不断变大会发生交叉,得出了天线展开速度、结构参数对系统稳定性的影响规律。为研究可展机构振动稳定性条件提供必要的参考数据,并为该天线的伸展机构设计与结构参数优化提供了依据。
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| 关 键 词： | 空间天线 径向可展 动力有限元 弹性动力学 振型叠加 |
| 文章编号： | 1003-8728（2007）11-1479-04 |
| 修稿时间： | 2007-01-04 |
On Elastodynamic Characteristics of Space Deployable Mechanism |
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| Zhang Chun,Wang Sanmin,Yuan Ru.On Elastodynamic Characteristics of Space Deployable Mechanism[J].Mechanical Science and Technology,2007,26(11):1479-1482,1489. |
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| Authors: | Zhang Chun Wang Sanmin Yuan Ru |
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| Abstract: | Combining the multistage linkage with a twin-screw thread transmission,we present a new deployable mechanism of a radial deployable antenna.We first build the dynamic model of the mechanism with finite elelment method(FEM),and then analyzed the model by the vibrating mode stacking method.Analysis result shows that as the deployed angle becomes larger,some orders of the natural frequency on specific points overlap each other.The influence of the deployed velocity and structure parameters on the stability of the system was also studied,and some useful conclusions are given. |
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| Keywords: | space deployable mechanism redial deployable antenna elastodynamies vibrating mode stacking method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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