摘要
结构的高频振动问题严重影响飞行器的服役安全性、可靠性和舒适性,高效准确地预示结构的高频振动响应具有重要的学术研究价值和工程实践意义。能量有限元法是近年来发展起来的一种高频振动响应预示新方法,弥补了有限元法、统计能量法等传统方法在高频振动响应预示方面的不足。本文回顾了能量有限元法的研究进展,阐述了能量有限元法的基本理论及其在工程领域的拓展和应用,对能量有限元法在飞行器结构高频振动响应预示方面的研究工作进行了介绍,并对能量有限元法未来的发展方向进行了展望。
The high-frequency vibration problem of structures seriously affects the service safety,reliability and comfort of the aircraft.It is of great academic value and engineering significance to predict the high-frequency vibration response of structures efficiently and accurately.The energy finite element method(EFEM)is a new method developed in recent years to predict high-frequency vibration response.It overcomes the shortcomings of traditional methods such as the finite element method(FEM)and the statistical energy analysis(SEA)in predicting highfrequency vibration response.In this paper,the research progress of the energy finite element method in recent years is reviewed.The basic theory of the energy finite element method and its extension and application in enginee ring are elaborated.Studies of the energy finite element method in predicting the high-frequency vibration response of aircraft structures are introduced.In addition,the future directions of the energy finite element method are prospected.
作者
陈兆林
杨智春
CHEN Zhaolin;YANG Zhichun(School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China;National Key Laboratory of Strength and Structural Integrity,Xi’an 710072,China)
出处
《航空工程进展》
CSCD
2024年第6期51-65,共15页
Advances in Aeronautical Science and Engineering
基金
国家自然科学基金青年科学基金项目(12302228)
陕西省自然科学基础研究计划青年项目(2022JQ-070)。
关键词
能量有限元法
高频振动
响应预示
能量密度
能量流
energy finite element method
high-frequency vibration
response prediction
energy density
energy flow
