基于有效模态质量优选法的机载雷达随机振动分析

Random Vibration Analysis of Airborne Radar Based on Optimization of Effective Modal Mass

随着现代电子设备不断向集成化、模块化和一体化方向发展,对于振动环境异常复杂的航空航天电子设备,系统级随机振动环境可靠性分析是决定结构总体设计方案成败的重要因素。针对某机载雷达系统结构的随机振动问题,建立一套基于有效模态质量优选法的随机振动分析技术,通过对复杂系统的合理简化以及优选法相关参数的细致考评,快速有效地获取系统级的随机振动响应,分析结果可为结构总体设计方案提供理论基础和设计指导,并为插件级或元件级结构设计提供载荷输入。

With the constant development in the direction of integration,modularization and unification of modern electronic devices,reliability analysis of system-level random vibration environments is an important factor in determining the success or failure of overall structure design scheme for aerospace electronic devices under very complex vibration environments. Studies on the random vibration of the structure of an airborne radar system are carried out,and a set of random vibration analysis techniques based on the optimization of effective modal mass are established. By reasonable simplification of complex systems as well as detailed evaluation of relevant parameters of the optimization,system-level random vibration responses are acquired rapidly and effectively. The analysis results can provide theoretical basis and design guidance for overall structure design scheme,and supply load input for plug-in-level or component-level structure design.