为满足舰载雷达的关键部件TR组件抗冲击和轻量化设计要求，采用DDAM和时域模拟法分别对TR组件进行冲击计算分析。由计算结果可知，2种冲击计算方法得到的应力分布区域和危险区域基本一致，3个冲击方向上最大应力均位于其后侧导向销上，且应力值均小于相应材料的屈服强度，垂向冲击应力最大，时域模拟法计算应力值小于DDAM，但计算时间明显高于DDAM。此外，通过分析TR组件冲击应力分布情况，提出了结构优化改进建议。对于TR组件这种位于舰船桅杆区重量控制严格的舰载设备，建议采用计算精度高且计算结果完善合理的时域模拟法代替DDAM进行冲击计算分析。研究结果可为舰载设备抗冲击轻量化设计提供理论支撑。
In order to meet the anti-shock and lightweight design requirements of TR module in shipborne radar, DDAM and time domain simulation method were used to compute and analyze the shock response of TR module. It can be seen from the computation results that stress distribution area and danger area obtained by two shock computation methods were the same. The maximum stress in three directions was located on the guide pin, the stress was less than the yield strength of the corresponding material, and the vertical shock stress was the largest. The stress computed by time domain simulation method was less than that of DDAM, but the computation time was obviously higher than that of DDAM. Furthermore, the structural optimization improvement suggestions were put forward by analyzing the shock stress distribution of TR module. It is suggested that time domain simulation method with high computation accuracy and reasonable computation results should be used instead of DDAM for shock analysis of TR module, which is shipborne equipment with strict weight control located in the ship mast area. The research results can provide theoretical support for the anti-shock and lightweight design of shipborne equipment.
2021,43(12): 155-160 收稿日期：2021-05-12
DOI：10.3404/j.issn.1672-7649.2021.12.028
分类号：U661.4
作者简介：朱曾辉(1990-),男,硕士,工程师,主要从事机电装备总体设计工作
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