一 模态试验的目的和任务飞行器发展史上,因振动和结构动力稳定性问题而导致飞行失败的事例是屡见不鲜的.在我国的型号研制过程中,也不乏因结构模态试验进行得不够充分而导致失败和反复的先例.因此,结构振动模态分析和试验,在飞行器设计研制中占有相当重要的位置. The purpose and mission of a modal test The history of aircraft development, due to vibration and structural dynamic stability problems caused by the flight failure is not uncommon in our model development process, there is no lack of structural modal testing due to inadequate and Leading to failure and repeated precedent.Therefore, structural vibration modal analysis and testing occupy a very important position in the design and development of aircraft.