柔性空间飞行器姿态动力学响应仿真的研究

将带有弹性附件的柔性空间飞行器模化为多体簇系统，考虑相邻体间相对运动为缓慢的实际特点，在忽略高阶非线性项的情况下，利用Ｄ’Ａｌｅｍｂｅｒｔ虚功原理，采用混合坐标的方法，建立了该多体簇系统的基本动力学方程。其中表示弹性附件的弹性变形的模态是约束模态，以上术方程为基础，采用状态空间求解方法，偏制了相应的动力学响应仿真程序；文章最后给出了仿真算例。

Research on Dynamic Response and Simulation of Flexible Spacecraft

The flexible spacecraft with elastic appendages is modelled as multibodycluster system. Considering the actual characteristic of slow-relatiVe-motion betweenadjacent bodies, omitting the high order nonlinear terms, employing the D'Alembert'sprinciple in virtual work and using hybrid coordinate, the governing dynamic equationof multibody cluster system is derived. Constrained modality is used to account forlinear elastic deformation of components. Finally, on the basis of aforementioneddynamic equation, using the state space format, the dynamic response and simulationprogram is worked out. Simulation example is presented by using this program.