Two-fold symmetrical 6R foldable frame and its bifurcations
Two-fold symmetrical 6R foldable frame and its bifurcations
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DOI：
10.1016/j.ijsolstr.2009.09.012
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发表时间：
2009-12
影响因子：
3.6
通讯作者：
Yan Chen;Z. You
中科院分区：
文献类型：
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作者：
Yan Chen;Z. You
在本文中，我们发现一种两折对称的 6R 可折叠框架被提议作为可展开的核心结构来支撑太空应用中的太阳能毯，实际上是线对称和平面对称的 Bricard 连杆机构。使用闭合方程雅可比矩阵的奇异值分解，我们能够证明框架部署期间存在分叉。在当前的设计中，分叉是不可避免的。然而，我们还确定了一个可以完全消除分叉的设计参数的可行区域。建立了物理模型，证明我们的结论是正确的。
In this paper, we have discovered that a type of two-fold symmetrical 6R foldable frame proposed as a deployable core structure to support solar blankets in space applications is actually a line and plane-symmetric Bricard linkage. Using the singular value decomposition of the Jacobian matrix of closure equations, we are able to show that bifurcations exist during deployment of the frame. And the bifurcations cannot be avoided in current designs. However, we also identified a feasible area for design parameters in which bifurcations can be completely removed. A physical model has been made which proves that our conclusion is correct.