行波管工作在非常恶劣的环境下,对结构可靠性具有很高的要求。本文探讨了国内外学者及科研机构对行波管结构动力学特性分析的研究方法和研究情况,利用有限元模仿真分析和随机振动试验相结合的方法,进行了某行波管输能窗两种结构的力学机理分析、动力学特性分析和随机振动试验。结果表明,有限元仿真分析的结论与随机振动试验的结果是吻合的。 Traveling wave tube work in a very harsh environment, the structural reliability has high requirements. In this paper, the research methods and research situation of the dynamic characteristics of TWT structures are discussed by domestic and foreign scholars and research institutes. By combining the finite element simulation and random vibration test, Mechanics analysis of structure, dynamics analysis and random vibration test. The results show that the conclusions of the FEM simulation are consistent with those of the random vibration test.