Hilbert-Huang变换在结构损伤识别中的应用The application of the Hilbert-Huang transform in the structures damaged detection
邹万杰;瞿伟廉;
摘要(Abstract):
为了识别出结构损伤情况,对结构加速度响应信号进行经验模态分解(EMD),得到各阶固有模态函数(IMF),利用第一阶IMF便可以识别出结构损伤发生的时刻及位置。然后利用对各阶IMF进行希尔伯特变换(HT)得到的瞬时频率和Hilbert谱来识别出结构损伤的程度。最后通过对一三层剪切型框架结构的实例分析,证明了该方法的有效性。
关键词(KeyWords): 损伤识别;EMD方法;Hilbert变换
基金项目(Foundation): 广西工学院青年基金(院科自0704217)
作者(Author): 邹万杰;瞿伟廉;
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参考文献(References):
- [1]Dowbling,S.W.,Farrar,C.R.,and Prime,M.B..A summary review of vibration-based damage identification methods[J].Shock Vib.Dig.,1998,30(2):91~105.
- [2]Huang N.E.,Zheng S.,Long S.R..The empirical mode decomposition and Hilbert spectrum for nonlinear and non-stationary,time series analysis[J].Proc R Soc Lond.1998,A454:903~995.
- [3]Huang.N.E.,Shen.Z.,and Long.S.R..new view of nonlinear water wave:The Hilbert spectrum[J].Annu.Rev.FluidMech.,1999,31:417~457.
- [4]Yang J.N.,Lei Y.,Lin S.,Huang N E.Hilbert-Huang Based Approach for Structural Damage Detection[J].Journal of Engi-neering Mechanics,2004,(1):85~95.
- [5]Xu Y.L.,Chen J..Structural Damage Detection Using Empirical Mode Decomposition:Experimental Investigation[J].Jour-nal of Engineering Mechanics,2004,(11):1279~1288.
- [6]李书进,虞晖,瞿伟廉.基于Hilbert—Huang变换的结构损伤诊断[J].武汉理工大学学报,2004,26(8):44~47.
- [7]潘新颖,蒋济同.单自由度结构系统损伤诊断的EMD方法[J].青岛建筑工程学院学报,2002,23(1):7~11.
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