行波管热及振动模拟研究分析

Analysis and Research on Thermal and Vibration Reliability of Traveling Wave Tubes

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。工作过程中产生的高温易导致各个部件变形,同时承受各种机械冲击和振动应力的作用,高温下的振动引起的应力和变形影响更加恶劣,从而影响行波管的各项性能指标和工作寿命,在热特性分析的基础上进行振动分析,可以获得工作状态下真实的振动特性,为产品的结构优化设计,提高产品的可靠性提供技术支持。本文调研分析了国内外学者及科研机构对行波管结构热与动力学特性分析的研究方法和研究情况,并结合电子五所的研究成果提出了行波管可靠性研究的进一步研究重点。

Travelling wave tubes （TWTs） ＂must meet the stringent structural reliability requirements under harsh working environment. The high temperature generated during the tube operation easily leads to various parts deformation, and meanwhile the tube also bears all kinds of mechanical shock and vibration stress effects. The stress resulted by vibration and parts deformation under high temperature affects the performance and lifetime of the TWTs seriously. Based on thermal characteristics analysis, researchers could obtain real vibration characteristics through thermal-vibration analysis, optimize the structure design of the TWTs, and thereby improve the reliability of TWTs, which provide a solid foundation for enhan- cing overall performance of TWTs. Authors investigate the research methods and research situations on thermal characteristics and dynamic characteristics of TWTs from domestic and foreign scholars and insti- tutions, combining the research achievements in China Electronic Produce Reliability and Environmental Testing Research Institute, propose the future research key point for TWTs reliability.