摘要
利用锤击法对某星载天线进行了基频辨识研究,得到了该结构在3种不同边界状态下的基频。测试结果表明,边界状态变化影响结构基频,但振形、阻尼比保持不变。测试结果为改进结构设计提供了参考。
The impact method was adopted to identify the fundamental frequency of the satellite antenna, the fundamen-tal frequencies of the structure were gained under three boundary conditions. Test result shows ： the fundamental frequency can change with the different boundary condition, but the mode shape and the damping ratio cannl change. The test result could be considered as reference to improve design of the satellite antenna structures.
出处
《空间电子技术》
2017年第1期46-49,共4页
Space Electronic Technology
关键词
天线
锤击法
模态试验
基频
Antenna
Impact method
Modal test
Fundamental frequency
