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基于结构损伤前后柔度矩阵改变的损伤部位向量法

, PP. 48-53

Keywords: 损伤部位向量,损伤识别,柔度矩阵,奇异值分解

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Abstract:

阐述了损伤部位向量法的基本原理,该法是假定结构损伤前后为线性,利用结构损伤前后的柔度矩阵差进行奇异值分解,从中获取反映结构损伤的指标――损伤部位向量,将其作为静力荷载施加在无损结构的测点位置,应力为0的单元为可能损伤的单元。以具有二个自由度的层间剪切结构模型为例验证了该方法的有效性。经推导论证,阐明了该方法实际应用的几个条件。

References

[1]  Doebling SW,Farrar CR,Prmie MB,et al.Damage identification and health monitoring of structural and mechanical systems from changes intheir vibration characteristics:aliterature review[R].Los Alamos National Laboratory report LA-13070-MS,1996.
[2]  Bernal D,Caanes B.Load vectors for damage local ization[J].Journal of Engineering Mechanics,2002,128(1):7-14.
[3]  Bernal D,Gunes B.Flexibility based approach for damage characterization:benchmark application[J].Journal of Engineering Mechanic,2004,130(1):61-70.
[4]  Spencer BF,Gao Y,Yang G.Distributed computing Strategy for damage monitoring employing smart sensors[C]//Ou,.Li& Duan.Proceedings of the 2nd Intern ational Conference on Structural Health Monitoring and Intelligent Infrastructure.Shenzhen:Taylor Francis Group,2006:3-47.
[5]  纪晓东,钱稼茹.损伤部位向量法原理及应用[J].工程力学,2008,25(4):10-20.Ji Xiaodong,Qian Jiaru.Principle and application of damage location or methods[J].Engineering mechanics,2008,25(4):10-20.
[6]  Pandey AK,BiswasM.Damage detection in structures using changes in flexibility[J].Journal of Sound and Vibration,1994,169(1):1-17.
[7]  Bernal,D.Damage local ization using load vectors[C]//Madrid:COST F3 Conference,2000,:I223-231.
[8]  Parloo E,Verboven B,Guillaume E.Sens it ivity-based operational mode shape normalization[J].Mechanical Systems and Signal Processing,2002,16(5):756-757.
[9]  Parloo E,Cauberghe B,Benedettini F.Sensitivity-based operational mode shape normalization:application to a bridge[J].Mechanical System sand Signal Processing,2005,19(1):43-55.
[10]  Gao Y,Spencer BF.On line damage diagnosis for civil in frastructure employing aflexi bility-based approach[J].Smart Materials and Structures,2006,15(1):9-19.

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