关键词: 涡轮喷气发动机;支承结构;弹性振动;模态分析;模态振动试验

Abstract: A pulse excitation method and the test equipment for modal test were introduced.An experiment modal analysis of the front bearing’s spring support of engine was completed.The results will be delivered to the design department of the engine structure,and will be helpful for vibration analysis of the turbojet engine

Key words: Turbojet engine;Bearing structure;Elastic vibration;Modal analysis;Modal vibration test