摘要
从连续介质力学原理出发 ,对作大范围运动的空间梁建立耦合动力学模型 .在纵向变形中计及了变形位移的二次耦合变形量 ,基于 Jourdain速度变分原理导出作大范围运动的空间梁的动力学方程 .将耦合动力学模型的仿真计算结果与不计二次耦合变形量传统的建模理论进行比较表明 ,在大范围运动的侧向角速度和浮动基基点的纵向加速度较大的情况下 ,二次耦合变形量对系统的刚
The coupling dynamic model of a spatial beam undergoing large overall motions was established based on continuum medium mechanics. The second order coupling terms of deformation were included in the longitudinal deformation. The coupling dynamic equations of the spatial beam undergoing large overall motions were obtained by use of Jourdain's velocity variational principle. The simulation results obtained by use of the coupling model were compared with those obtained by use of the conventional model, in which the coupling terms of deformation are neglected. It was shown that the coupling terms of deformation may have significant effect on the dynamic characteristics of the system in the case of high lateral rotating speed and large longitudinal base acceleration.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2003年第4期532-534,共3页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金重点资助项目(19832040)
博士点基金资助项目 ( 2 0 0 0 0 2 4818)
