摘要
能量有限元方法是在波动理论上建立的一种功率流方法,兼具有限元方法和统计能量方法的优点,是预示中高频域振动和噪声的一种新方法。针对国内外能量有限元的研究成果,首先从简单结构、组合结构、声振响应、特殊结构及与其他方法的结合5个方面介绍了能量有限元方法的理论研究进展,接着以杆结构为例介绍了能量有限元的基本原理,之后介绍了能量有限元软件的研究进展,重点介绍了。NASTRAN自带的EFEA软件,最后总结了能量有限元方法的成果及存在的问题,说明继续完善能量有限元理论及软件并将其应用到工程中去是迫切需要开展的研究工作。
Energy finite element analysis（EFEA） is a power flow method based on wave theory.It has advantages of both finite element method and statistical energy method, and it＇s one new method for predicting mechanical vibration and noise in frequencies ranging from medium to high. Aiming at EFEA works around the world, the EFEA theory development is shown from five aspects including simple structures, assembled structures, acoustic-vibration, special structures and mixed methods at the first, then the EFEA principle is presented by using an example of bar, and then the EFEA software development is shown where EFEA software of NASTRAN is signified. Finally both the achievements and existing problems are summarized so that later work is needed in order to apply EFEA theory and software to engineering.
出处
《强度与环境》
2015年第3期10-19,共10页
Structure & Environment Engineering
关键词
能量有限元
波动理论
功率流方法
中高频域
振动和噪声
EFEA软件
energy finite element analysis
wave theory
power flow method
frequencies ranging frommedium to high
vibration and noise
EFEA software
