大型太阳帆板展开状态动态特性研究

利用有限元技术及自编的 FORTRAN程序计算了单翼太阳帆板约束模态的振型和频率 ,计算结果和实验结果比较表明 ,计算精度在工程上是可以接受的。在此基础上 ,以飞船带有双翼对称太阳帆板为模型 ,计算了太阳帆板在转动和不转动情况下非约束模态的振型和频率。上述计算结果为研究带有挠性太阳帆板的航天器的动力学与控制问题打下了基础

The Research on Dynamic Characteristics of Large Deployed Solar Panel

First,constrained mode's frequency and vibration shape of single solar panel are calculated with Finite Element Method (FEM)and FORTRAN language,the comparison between simulation and experimental results shows that the accuracy of the calculation is acceptable in engineering .Second,based on the above results,spacecraft model with two symmetrical solar panels is founded and unconstrained mode's frequency and vibration shape are computed in two cases:rotation and nonrotation.Finally,all the above results provide the bases for study on dynamics and control of spacecraft with flexible solar panel.