摘要
基于周期结构的振动理论，把折叠状态太阳电池翼当作拟周期结构处理，解释了太阳电池翼在进行模态分析时所出现的“主模态局部化”现象，了解该现象对于在实验模态分析中确定阻尼系数具有重要意义。同时从理论上说明了，简单的基板模型的第1阶特征值是整翼模型的第1阶特征值的近似值。两个算例计算的结果支持了这个观点。
Based on the vibration theory of periodic structure, this paper treats the stowed solar arraywing as a pseudo-periodic structure and explains the phenomenton of IInormal mode localization' be foundin the modal analysis of stowed wing, that is of important for the determination of damping coefficient inexperimental modal analysis. And it is also explained that the eigenvalue of the first mode of the simplebase plate would be an approximate value to that of the first mode of the whole wing model. The calculation results of two samples supporte the view point.
出处
《强度与环境》
1997年第2期14-19,共6页
Structure & Environment Engineering
