| 杆系可展开结构静动定特性及几何稳定性探讨 |
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| 引用本文： | 赵洪斌,卢成江,吴知丰,谢礼立.杆系可展开结构静动定特性及几何稳定性探讨[J].哈尔滨工业大学学报,2007,39(6):857-860. |
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| 作者姓名： | 赵洪斌 卢成江 吴知丰 谢礼立 |
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| 作者单位： | 1. 哈尔滨工业大学,土木工程学院,哈尔滨,150090
2. 哈尔滨工业大学,土木工程学院,哈尔滨,150090;中国地震局,工程力学研究所,哈尔滨,150080 |
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| 基金项目： | 国家自然科学基金资助重点项目(50538050) |
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| 摘 要： | 杆系可展开结构是一种新型空间结构形式,结构的刚性是其工程设计的关键.阐述了这种结构的基本特征,讨论了杆系铰接体系静动定分类方法,并引用线性理论中过定的概念明确了体系分类的力学含义.采用平衡矩阵的奇异值分解方法确定体系的静动定参数、独立自应力模态和机构运动模态.对几种典型的杆系可展开体系的分析表明:体系为实现展开功能而具有不同的机构状态.折叠结构需要附加约束来满足结构刚性要求,而张拉整体结构内在的一阶无穷小机构使其具有了承载能力.
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| 关 键 词： | 可展开结构 奇异值分解 剪铰单元 几何稳定性 |
| 文章编号： | 0367-6234（2007）06-0857-04 |
| 修稿时间： | 2005-04-18 |
A discussion on static, kinematic properties and geometric stability of deployable member structures |
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| ZHAO Hong-bin,LU Cheng-jiang,WU Zhi-feng,XIE Li-li.A discussion on static, kinematic properties and geometric stability of deployable member structures[J].Journal of Harbin Institute of Technology,2007,39(6):857-860. |
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| Authors: | ZHAO Hong-bin LU Cheng-jiang WU Zhi-feng XIE Li-li |
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| Affiliation: | 1.School of Civil Engineering;Harbin Institute of Technology;Harbin 150090;China;2.Institute of Engineering Mechanics;China Seismological Bureau;Harbin 150080;China |
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| Abstract: | Deployable member structures are a new type of space structure.In the design of engineering structures,the key is to ensure the rigidity of the structures.The basic properties of the deployable member structures are explained.The classifications of pin-connected bar system are discussed based on the static and kinematic property,and its mechanical explanations are given by introducing the concept of over-determinacy in the linear theory.The singular value decomposition method for equilibrium matrix is devel... |
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| Keywords: | deployable structure singular value decomposition scissor-like element geometric stability |
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