非惯性坐标系下柔性梁的动力学分析与压缩建模  

A Dynamic Modeling Method with Nonlinear Deformation of Flexible Beam of Spacecraft Considered More Carefully

作　　者：和兴锁[1] 张亚锋[1] 邓峰岩[1] 

机构地区：[1]西北工业大学工程力学系,陕西西安710072

出　　处：《西北工业大学学报》2009年第6期777-780,共4页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金(10672133)资助

摘　　要：文章针对大范围运动已知的空间柔性梁结构建立其动力学方程。通过研究与分析,提出了文中精确模型,各项矩阵较原有一次耦合模型新增了2类耦合项:即变形耦合项和基点速度和角速度耦合项。通过仿真计算,比较其动力学特性与零次、一次耦合模型的差异,确定各种耦合项的作用,并进行了定性分析。最后研究了复杂系统的压缩建模问题,为工程实际和今后的研究奠定了理论基础。Aim.Although the first-order coupling dynamic model has recently replaced the zeroth-order one,it is,in quite a number of cases,still not precise enough.We now present a coupling dynamic model with nonlinear deformation of the flexible beam of a spacecraft more carefully considered than in the first-order one.Section 1 of the full paper presents equations for our model;they are the same as those for the first-order one except that two groups of underlined terms are added: singly underlined terms in eqs.(2),...

关 键 词：非惯性坐标系 柔性梁 动力学分析 

分 类 号：O313.7[理学—一般力学与力学基础]