摘要
针对某雷达系统天线轻量化设计要求,进行了恶劣环境下的抗冲击仿真分析和结构轻量化设计。利用动力学分析方法,在有限元软件中建立了天线的仿真模型,将加速度冲击谱时域曲线直接作用于天线的安装件。计算得到天线在该冲击谱作用下的冲击响应,仿真结果显示可减小天线结构件的厚度尺寸,并对应力较小的部位进行减重设计。对尺寸和结构优化后的天线再次进行仿真分析。结果表明:优化后的天线质量减轻的30%,同时结构刚强度满足工作环境抗冲击要求。
In view of the lightweight requirement of a radar antenna, the anti-shock simulation and analysis and structural lightweight design are done under severe environments. The simulation model of the antenna is built in the FEM software with the dynamics analysis methods, and the accelerated shock spectrum time-domain curves are directly applied on the mounting parts of the antenna. The shock response of the antenna under the shock spectrum is obtained through the calculation. The simulation results show that the thickness of the structural parts can be reduced and some parts with less stress can also be lightened. The optimized antenna is simulated and analyzed again. The re- sults indicate that the antenna quality is reduced by about 30%, and at the same time the rigidity and strength of the structure satisfy the anti-shock requirement of the working environment.
出处
《雷达与对抗》
2016年第2期53-55,60,共4页
Radar & ECM
关键词
抗冲击
雷达系统
天线
轻量化
anti-shock
radar system
antenna
lightweight
