一种空间可展开的伸缩机构研究

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摘要提出了一种基于薄壁开口管的一维空间伸缩机构。首先，介绍了薄壁开口管收拢展开原理，分析了薄壁开口管的截面特性，基于经典层合板理论，推导其双稳态特性的稳定条件，给出了稳态构型点。其次，通过有限元分析，求解出不同直径、张角的开口管的屈曲刚度。再次，提出了摩擦驱动的薄壁开口管展开形式，采用弧面驱动辊子实现与薄壁开口管过渡段的壁面紧密贴合。最后，设计制造了薄壁开口管伸缩机构样机，并开展了试验验证。试验结果表明，该伸展臂可以实现轴向50N负载下的稳定运动，采用三套伸展臂组件周向均匀布置，同步驱动，实现了可展开遮光罩重力卸载下的展开试验。

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	关奉伟1
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	曹乃亮1
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关键词 ：可展开机构, 开口管, 航天器, 复合材料

Abstract：A one-dimensional deployable mechanism based on thin-walled open tube was proposed.First,the deployable principle of the thin-walled open tube was introduced,the section characteristics of the thin-walled open tube was analyzed,the stability condition of bistable characteristic based on the classical laminated plate theory was derived,and a steady configuration point was gave.Secondly,different diameters and angles open tube buckling stiffness was derived through the finite element analysis.Thirdly,the deployable mechanism of thin wall open tube driven by friction was proposed,which was closely fitted to the transition section wall of the thin-walled open tube by using roller driven.Finally,the prototype of thin-walled open tube deployable mechanism was manufactured,and the test verification was carried out.Test results show that the deployable mechanism can achieve stable motion under axial 50N load,and three deployable mechanisms were arranged uniformly and driven synchronously,a deployable test of the prototype under gravity unloading was realized.

Key words： deployable mechanism open tube spacecraft composite materials

收稿日期: 2018-03-21 出版日期: 2019-02-15

引用本文:

关奉伟1,2，曹乃亮1,2. 一种空间可展开的伸缩机构研究[J]. 振动与冲击, 2019, 38(4): 103-109.
GUAN Fengwei1,2,CAO Nailiang1,2. A study on a space deployable telescopic mechanism. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(4): 103-109.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I4/103

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