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考虑弹性变形的可展杆系结构展开分析 被引量:2

DEPLOYMENT ANALYSIS OF DEPLOYABLE TRUSS STRUCTURES WITH FLEXIBLE DEFORMATION
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摘要 为了保证空间可展结构可靠运行,在展开过程分析中需同时考虑机构运动和弹性变形。首先建立可展杆系结构展开分析的基础方程式,然后基于广义逆矩阵的理论提出了空间可展杆系结构机构运动与弹性变形的混合分析新方法,解决了机构运动与弹性变形的耦合问题,取得了较好的展开分析精度。与传统的柔性多体动力学方法相比,其优点是建模简单,能够有效地跟踪大型可展杆系结构的复杂运动。编制了仿真程序进行了算例分析,验证了分析方法的有效性。 In order to ensure structural reliability of deployable structures in orbit, the hybrid analysis of its mechanism motion and flexible deformation is required. The basal equations for deployment analysis of deployable truss structures were thusly formulated. By using the generalized inverse theory, a new method was developed to the hybrid analysis of deployable truss structures with mechanism motion and flexible deformation. The coupling between these two motions was calculated, so the analytical process could obtain a high accuracy. Compared with conventional dynamics of flexible multibody system, the advantage of thisnew method lies in its ability to analyze the complex movement of large deployable truss structure effectively with a comparatively simple modeling process. The efficiency of the new method was verified by simulation program based on it.
出处 《工程力学》 EI CSCD 北大核心 2007年第8期100-104,65,共6页 Engineering Mechanics
基金 国家自然科学基金资助项目(69982009)
关键词 可展杆系结构 机构运动 弹性变形 广义逆 展开分析 deployable truss structure mechanism motion flexible deformation generalized inverse deployment analysis
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