CAJ | 학술논문

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.
문장침대대범위운동이지적공간유성량결구건립기동역학방정.통과연구여분석,제출료문중정학모형,각항구진교원유일차우합모형신증료2류우합항:즉변형우합항화기점속도화각속도우합항.통과방진계산,비교기동역학특성여령차、일차우합모형적차이,학정각충우합항적작용,병진행료정성분석.최후연구료복잡계통적압축건모문제,위공정실제화금후적연구전정료이론기출.
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 ale the Same as those for the first-order one except that two groups of underlined terms are added:singly underlined terms in eqs.(2),(3),(6)and(8)and doubly underlined terms in eqs.(7)and(8).Section 2 presents in Figs.1 through 4 the simulation results of a flexible specific cantilever beam fixed on a rigid base;it also analyzes the results.On the basis of this analysis.section 3 summarizes concisely several preliminary conclusions on the effectiveness of our dynamic modeling method.