某车载雷达支架固有特性的实验模态分析

The Experimental Modal Analysis of a Vehicle Radar Bracket's Inherent Characteristics

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.

The radar bracket of a vehicle was analyzed by using hammer method and five-or- der radar bracket order natural frequency and dampimg ratio of five-order mode were ob- tained. According to experimental result, the first three order modal radar chart was pro- duced. The weak part of radar bracket was found out. Some theoretical references were pres- ented to improve disign of radar bracket of a vehicle.