通过理论计算和有限元仿真,研究舰用雷达阵面在不同冲击环境下的响应。文中将冲击载荷作用下舰用雷达阵面的受力模型简化为基础激励的多自由度系统,通过对受力模型的边界模态进行虚拟约束的方法计算了不同冲击环境下的响应。结果表明: 舰用雷达阵面响应基本不受冲击谱参数中谱加速度变化的影响,而谱位移和谱速度对舰用雷达阵面响应影响较大。分析结果可为冲击环境下舰用雷达阵面的响应分析和影响评估提供参考。

Through theoretical calculation and finite element simulation, the response of shipboard array antenna under different shock environments is studied. The force-bearing model of the shipboard array antenna under exploding impact is simplified to a multi-DOF system with base excitation, and the response under various exploding environment are calculated by applying virtual constraint boundary method to the multi-DOF system. The results show that spectral acceleration has little impact on equipment response, while spectral displacement and spectral velocity have great influence on it. Analysis results are a good reference for analysis of the response and anti-shocking ability of shipboard electronic equipment under shock environment.

TN959