某机载雷达天线振动试验夹具设计  

Design of Vibration Test Fixture for Middle Part of Airborne Radar Antenna

作　　者：刘继承[1] 周传荣[1] 

机构地区：[1]南京航空航天大学振动工程研究所,南京210016

出　　处：《振动．测试与诊断》2003年第3期210-212,共3页Journal of Vibration,Measurement & Diagnosis

摘　　要：为了合理地设计符合振动环境试验要求的夹具 ,根据某机载雷达振动试验条件及有关振动环境试验夹具设计规范 ,对该天线中块振动试验夹具进行了结构动力特性设计。振动试验表明 :夹具的动态特性满足了振动环境试验夹具设计的要求。天线环境振动试验时 ,加速度谱密度值的控制误差明显小于± 3d B,完全符合有关振动环境试验规范的要求。因此 ,该夹具设计是成功的。A fixture is the key to the success of large structure environmental vibration testing. The related criterion presents specific dynamic demands for the fixture. According to related vibration test condition and the criterion for the design of a test fixture, this paper introduces a method for the dynamic design of a test fixture for the middle part of an airborne radar antenna. Modal test results show that the dynamic characteristics of the fixture meet the needs of its design criterion. The acceleration power spectral density of the environment test can be controlled within ±3 dB from the specified requirment.

关 键 词：机载雷达天线 振动试验 夹具设计 试验容差 

分 类 号：V243.4[航空宇航科学与技术—飞行器设计] V216.21