某车载雷达支架固有特性的实验模态分析

摘要

The radar bracket of a vehicle was analyzed by using hammer method and five-order radar bracket order natural frequency and dampimg ratio of five-order mode were obtained. According to experimental result, the first three order modal radar chart was produced. The weak part of radar bracket was found out. Some theoretical references were presented to improve design of radar bracket of a vehicle.%利用锤击法对某车载雷达支架固有特性做实验模态分析,得到车载雷达支架的前五阶固有频率和前五阶模态阻尼比,并根据测试结果绘制出雷达支架前三阶振型图,得知车载雷达支架的薄弱部分,为车载雷达支架改进设计提供了理论依据.