全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

基于小波传递性函数的结构损伤识别研究

DOI: 10.13197/j.eeev.2014.05.28.fanz.004, PP. 28-34

Keywords: 结构损伤识别,传递性函数,小波变换,离群值分析,模型试验

Full-Text   Cite this paper   Add to My Lib

Abstract:

局部损伤所引起的结构特性改变将导致不同自由度之间的传递特性发生变化,而传递性函数的改变可用于结构损伤识别。但是,基于Fourier变换的传递性函数对结构轻微局部损伤不够敏感。本文利用小波变换的时-频多分辨率特性,在小波域内构造了一种新的传递性函数,并且结合统计学中的离群值分析,建立了基于小波传递性函数的结构损伤探测方法。最后通过一个斜拉桥模型试验对方法的可行性予以验证。研究表明,所提出的小波传递性函数指标对结构损伤十分敏感,利用本文的损伤探测方法可以有效地对结构的轻微损伤进行识别。

References

[1]  Canales G, Mevel L, Basseville M. Transmissibility based damage detection[C]// Proceedings of the 27th International Modal Analysis Conference (IMAC-XXVII) Orlando, Florida, USA: 2009.
[2]  Almeida R A B, Urgueira A P V, Maia N M M. The use of transmissibility properties to estimate FRFs on modified structures[J].Shock and Vibration,2010,17(4):563-577.
[3]  Urgueira A P V, Almeida R A B, Maia N M M. On the use of the transmissibility concept for the evaluation of frequency response functions[J].Mechanical Systems and Signal Processing,2011,25(3):940-951.
[4]  Steenackers G, Devriendt C, Guillaume P. On the use of transmissibility measurements for finite element model updating[J].Journal of Sound and Vibration,2007,303(3):707-722.
[5]  Devriendt C, Guillaume P. Identification of modal parameters from transmissibility measurements[J].Journal of Sound and Vibration,2008,314(1):343-356.
[6]  Maia N, Urgueira A, Almeida R. Whys and wherefores of transmissibility[J].Vibration Analysis and Control-New Trends and Developments. UK: InTech,2011,10:197-216
[7]  Ribeiro A M R, Silva J M M, Maia N M M. On the generalisation of the transmissibility concept[J].Mechanical Systems and Signal Processing,2000,14(1):29-35.
[8]  Maia N M M, Silva J M M, Ribeiro A M R. The transmissibility concept in multi-degree-of-freedom systems[J].Mechanical Systems and Signal Processing,2001,15(1):129-137.
[9]  Chui C K. An introduction to wavelets[M].San Diego:Academic,1992.
[10]  Mallat S G. A theory for multiresolution signal decomposition: the wavelet representation[J].Pattern Analysis and Machine Intelligence, IEEE Transactions on,1989,11(7):674-693.
[11]  Worden K, Manson G, Fieller N. Damage detection using outlier analysis[J].Journal of Sound and Vibration,2000,229(3):647-667.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133