【摘要】 文中介绍了一种展开结构，它包括子结构、主动索、被动索。子结构由几个杆件集成；一根或多根主动索驱动机构展开；被动索在折叠或部分展开时松驰，在完全展开时张紧。文中还分析了正八面体单元特性；设计了一可展馈源支撑架方案；推导出伸展臂展开过程几何变化规律；给出了仅有预应力时自平衡体系受力分析；建立了可滑动－转动单元的刚度矩阵和伸展臂的数值分析模型。更多还原

【Abstract】 In this paper, a deployable structure consisting of sub structure, active cable and passive calbe is introduced. Sub structure is integrated with several rods; One or more active cables activate mechanism deploy; Passive cables are slack at package or partly deployable configuration, and taut at fully deployable configuration. Characteristics of octahedral module are analyzed and a deployable feed mast is designed. Geometry analysis during deployment is developed, self equilibrated stress is presented with only prestress, stiffness matrices of a slide pivot element are formulated, and a numerical analysis model is established for the mast.更多还原