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柔度曲率法对梁结构的损伤诊断

Keywords: 结构,损伤诊断,柔度,曲率,模态参数

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Abstract:

针对各种支承形式梁结构的损伤诊断,采用结构柔度矩阵最大列元素的柔度曲率(M_(FC))对悬臂梁进行损伤定位,采用损伤结构柔度矩阵主对角元素的柔度曲率(D_(FC))对非悬臂梁进行损伤定位,算例表明,针对不同形式的梁构造不同柔度曲率指标,仅用损伤结构少数低阶的模态参数,就可以对非悬臂和悬臂梁结构进行损伤定位识别,本文方法求得的柔度曲率曲线既能识别单个损伤的存在,也能识别多个损伤的位置,并能定性地反映损伤程度。

References

[1]  RAGHAVENDRACHAR M,AKTAN A E.Flexibility by multireference impact testing for bridge diagnostics[J].Journal of Structural Engineering,1992,118(8):2186-2203.
[2]  PANDEY A K,BISWAS M.Damage detection in structures using changes in flexibility[J].Journal of Sound and Vibration, 1994,169(1):3-17.
[3]  AKTAN A E,LEE K L,CHUNTAVAN C,et al.Modal testing for structural identification and condition assessment of constructed facilities[C]//Proc.of 12th International Modal Analysis Conference.Honolulu,[s.n.],1994:462-468.
[4]  DOEBLING S W,FARRAR C R.Computation of structural flexibility for bridge health monitoring using ambient modal data [C]//Engineering Mechanics:Proceedings of 11th Conference,New York,Columbia University,1996,2:1114-1116.
[5]  ZHAO J,DE WOLF J T.Sensitivity study for vibrational parameters used in damage detection[J].Journal of Structural Engineering,1999,125(4):410-416.
[6]  唐小兵.结构损伤识别与数值模拟[D].武汉:武汉理工大学交通学院,2004.TANG Xiao-bing.Structural damage identification and numerical simulation[D].Wuhan:College of Transportation,Wuhan University of Technology,2004.(in Chinese)
[7]  CAWLEY P,ADAMS R D.The location of defects in structures from measurements of natural frequencies[J].Journal of Strain Analysis,1979,14(2):49-57.
[8]  李德葆,陆秋海,秦权.承弯结构的曲率模态分析[J].清华大学学报(自然科学版),2002,42(2):224-227.LI De-hao,LU Qiu-hai,QIN Quan.Curvature modal analysis for bending structures[J].Tsinghua Science and Technology, 2002,42(2):224-227.(in Chinese)

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