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首页> 外文会议>3rd AIAA spacecraft structures conference 2016 >Stepwise Deployments of Membrane Structure with Rolled-up Braided CFRP Bi-Convex Booms
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Stepwise Deployments of Membrane Structure with Rolled-up Braided CFRP Bi-Convex Booms

机译：卷式编织CFRP双凸臂的膜结构的逐步展开

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摘要

Stepwise deployments of a membrane structure with rolled-up booms have been investigated. The boom consists of two bi-convex tapes covered by a braid sleeve. The boom can be smoothly rolled up and unrolled by elastic deformation. In this paper, new lightweight booms consists of tri-axial woven fabric CFRP convex tapes with 800 millimeter long are introduced to reduce the weight and to enlarge the structure. First of all, in order to study the mechanical properties of the boom, three point bending test and vibration test of are carried out. Then deployment experiments of four booms rolled-up around a central hub are conducted to confirm that the booms can be fully deployed under gravity. Subsequently, deployment experiments of the booms with a square membrane folded by the modified spiral folding are conducted. To prevent lateral buckling of the booms due to the weight of the membrane, a simple gravity compensation method using suspension strings is devised. Deployment experiments of several deployment patterns are successfully performed and the effects of the stepwise deployments are clearly demonstrated. Finally, numerical model of the structure is created by employing the multi-particle approximation method and stepwise deployment simulations are conducted.
机译：已经研究了具有卷起的悬臂的膜结构的逐步展开。动臂由两个双凸胶带组成，并由编织套管覆盖。动臂可以通过弹性变形平稳地滚动和展开。本文介绍了一种新型的轻型动臂，该动臂由三轴编织的CFRP凸条带组成，长度为800毫米，以减轻重量并扩大结构。首先，为了研究动臂的机械性能，进行了三点弯曲试验和振动试验。然后进行围绕中央轮毂卷起的四个吊杆的展开实验，以确认吊杆可以在重力作用下完全展开。随后，进行了通过改进的螺旋折叠将方形薄膜折叠的动臂的展开实验。为了防止由于膜片的重量而引起的动臂的侧向屈曲，设计了一种使用悬架线的简单重力补偿方法。成功地执行了几种部署模式的部署实验，并清楚地演示了逐步部署的效果。最后，采用多粒子逼近方法建立了结构的数值模型，并进行了逐步展开模拟。

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