摘要
本文利用初始构形、中间构形和现时构形三种构形 ,给出了作大范围平动弹性结构的运动学描述方法 ,建立了作大范围平动弹性梁的刚 -柔耦合动力学控制方程。利用Melnikov方法和数值仿真技术 ,讨论了作大范围平动弹性梁的全局分岔和混沌性质 ,通过分析表明 ,当大范围平动超过某一临界速度时 ,它对弹性结构动力学性质的影响有着决定性的作用。本文的研究将有利用于柔性多体系统的刚
The coupled dynamical equations of elasite beams under translation are established in the paper,and the dynamical effect of translation on the deformation of elastic beams is also analyzed.There exists notable difference between the coupled dynamics of translation_deformation and that of rotation_deformation.Due to translation the stiffness of elastic beams is decreased and the system's damping,is increased while due to rotation the stiffness of elastic beams is increased and the gyp effect is introduced into the system.Therefore,coupled effects between translation and deformation must be accounted in rigid_flexible coupled dynamical modeling of flexible multibody system.
出处
《振动与冲击》
EI
CSCD
北大核心
2002年第2期11-14,共4页
Journal of Vibration and Shock
基金
国家自然科学基金重点资助 (1 9832 0 4 0 )
湖南省自然科学基金资助项目 (0 0JJY2 0 85)
