小波奇异性在钢结构损伤检测中的应用
|
摘要
根据小波奇异性检测理论,以应变能的损伤信号为结构损伤指标,分别以悬臂梁结构、平面桁架结构和空间网架结构为例进行数值模拟,将原始损伤信号和经过小波变换后的损伤信号进行对比,结果证明采用该方法不但对单一损伤而且对多损伤均能有效地识别出结构的损伤位置,表明了该方法的可靠性和实用性。
The inevitable damage,aging of steel structures in use process,needs detecting damage location.The wavelet analysis technique provides new ideas and methods for the steel structural damage detection.Based on the theory of wavelet singularity detection,with the injury signal of strain energy as structural damage index,and cantilever beam structure,plane truss structure and spatial truss as examples for numerical simulation,the original damage signal and the damage signal after wavelet transformation is compared.The calculational result shows that the present method as a reliable and practical way can be adopted to detect the single and several locations of damage in structures.
The inevitable damage,aging of steel structures in use process,needs detecting damage location.The wavelet analysis technique provides new ideas and methods for the steel structural damage detection.Based on the theory of wavelet singularity detection,with the injury signal of strain energy as structural damage index,and cantilever beam structure,plane truss structure and spatial truss as examples for numerical simulation,the original damage signal and the damage signal after wavelet transformation is compared.The calculational result shows that the present method as a reliable and practical way can be adopted to detect the single and several locations of damage in structures.
引文
[1]刘涛,李爱群,丁幼亮.小波分析在损伤识别中的应用[J].地震工程与工程振动(Journal of Earthquake Engineering and Engi-neering Vibration),2008,28(2):29-35.
[2]陈长征,罗跃纲,白秉三,等.结构损伤检测与智能诊断[M].北京:科学出版社,2001.
[3]HOU Z,NOORI M,AMAND R S.Wavelet-based approach for structural damage detection[J].J Engrg Mech,2000,126(7):677-683.
[4]SUN Z,CHANG C C.Structural damage assessment based on wavelet packet transform[J].J Struct Engrg,2002,128(10):1 354-1 361.
[5]HAASE M,WIDJAJAKUSUMAJ.Damage identification based on ridges and maxi ma lines of the wavelet transform[J].Journal of Engi-neering Science,2003,41:1 423-1 443.
[6]岳猛,姜恩勇,马润杰,等.基于小波变换和CUSUM算法的PDOS攻击检测方法[J].河北科技大学学报(Journal of Hebei Universityof Science and Technology),2008,29(1):33-35.
[7]段培超,周春平.基于小波变换和数学形态学的航空图像边缘检测[J].河北科技大学学报(Journal of Hebei University of Science andTechnology),2006,27(2):158-161.
[8]王素华,张伟林.斜拉桥斜索损伤分析中的小波变换研究[J].安徽建筑工业学院学报:自然科学版(Journal of Anhui Institute of Architec-ture&Industry(Natural Science)),2004,12(3):13-17.
[9]AL-KHALIDY A,NOORI M,HOUZ,et al.Healthmonitoring systems of linear structuresusingwaveletanalysis[A].Proceedings of Inter-national Workshop on Structural Health Monitoring:Current Status and Perspectives[C].Stanford:StanfordUniversity,1997.164-175.
[10]AL-KHALIDY A,NOORI M,HOUZ,et al.Astudy of healthmonitoring systems of linear structures usingwaveletanalysis[A].Proceed-ings of the 1997 ASME PressureVessels and Piping Conference[C].FL:Orlando,1997.49-58.
[11]LIEW K M,WANG Q.Application ofwavelet theory for crack identification in structures[J].Journal of Engineering Mechanics,1998,124(2):152-157.
[12]廖锦翔,袁明武,张劲泉.小波变换在桥梁结构损伤识别中的应用[J].公路交通科技(Journal of Highway and Transportation Researchand Development),2004,21(11):30-34.
[13]王振林,聂国华.基于曲率模态和小波奇异性的结构损伤识别[J].力学季刊(Chinese Quarterly of Mechanics),2009,29(2):278-283.
[2]陈长征,罗跃纲,白秉三,等.结构损伤检测与智能诊断[M].北京:科学出版社,2001.
[3]HOU Z,NOORI M,AMAND R S.Wavelet-based approach for structural damage detection[J].J Engrg Mech,2000,126(7):677-683.
[4]SUN Z,CHANG C C.Structural damage assessment based on wavelet packet transform[J].J Struct Engrg,2002,128(10):1 354-1 361.
[5]HAASE M,WIDJAJAKUSUMAJ.Damage identification based on ridges and maxi ma lines of the wavelet transform[J].Journal of Engi-neering Science,2003,41:1 423-1 443.
[6]岳猛,姜恩勇,马润杰,等.基于小波变换和CUSUM算法的PDOS攻击检测方法[J].河北科技大学学报(Journal of Hebei Universityof Science and Technology),2008,29(1):33-35.
[7]段培超,周春平.基于小波变换和数学形态学的航空图像边缘检测[J].河北科技大学学报(Journal of Hebei University of Science andTechnology),2006,27(2):158-161.
[8]王素华,张伟林.斜拉桥斜索损伤分析中的小波变换研究[J].安徽建筑工业学院学报:自然科学版(Journal of Anhui Institute of Architec-ture&Industry(Natural Science)),2004,12(3):13-17.
[9]AL-KHALIDY A,NOORI M,HOUZ,et al.Healthmonitoring systems of linear structuresusingwaveletanalysis[A].Proceedings of Inter-national Workshop on Structural Health Monitoring:Current Status and Perspectives[C].Stanford:StanfordUniversity,1997.164-175.
[10]AL-KHALIDY A,NOORI M,HOUZ,et al.Astudy of healthmonitoring systems of linear structures usingwaveletanalysis[A].Proceed-ings of the 1997 ASME PressureVessels and Piping Conference[C].FL:Orlando,1997.49-58.
[11]LIEW K M,WANG Q.Application ofwavelet theory for crack identification in structures[J].Journal of Engineering Mechanics,1998,124(2):152-157.
[12]廖锦翔,袁明武,张劲泉.小波变换在桥梁结构损伤识别中的应用[J].公路交通科技(Journal of Highway and Transportation Researchand Development),2004,21(11):30-34.
[13]王振林,聂国华.基于曲率模态和小波奇异性的结构损伤识别[J].力学季刊(Chinese Quarterly of Mechanics),2009,29(2):278-283.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心