CAJ | 학술논문

振动台夹具是振动台上用以固定被试件的关键结构件,首先应满足被试件的安装要求,其次为了能在试验频率范围内对被试件开展振动试验,其结构模态应有尽量高的固有频率,并避免与试件发生共振耦合。在设计夹具的基础上,分析其前十阶的固有模态,并根据其固有频率的高低改进了结构,使得模态符合试验要求。
진동태협구시진동태상용이고정피시건적관건결구건,수선응만족피시건적안장요구,기차위료능재시험빈솔범위내대피시건개전진동시험,기결구모태응유진량고적고유빈솔,병피면여시건발생공진우합。재설계협구적기출상,분석기전십계적고유모태,병근거기고유빈솔적고저개진료결구,사득모태부합시험요구。
Vibration fixture is used to fix the specimens on vibration bench.The vibration fixture should meet the installation requirements of specimen;moreover,its natural frequency should be as high as possible and its structure should avoid resonance coupling with the specimens in order to conduct vibration test on specimens within the test frequency range.In this paper,based on the structure design of the fixture,the top ten bands of natural mode are analyzed,and according to the level of the natural frequency,the natural frequency of the bench is improved by optimizing the structural,so as to meet the test requirements for the bench.