STUDY ON STRUCTURAL DAMAGE IDENTIFICATION BASED ON THE RELATIVE ELEMENT STIFFNESS COEFFICIENT

Du Yongfeng; Li Zhuohang; Li Hui

doi:10.13204/j.gyjz201308008

Volume 43 Issue 8

Dec. 2014

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2013 > 43(8): 39-42

Du Yongfeng, Li Zhuohang, Li Hui. STUDY ON STRUCTURAL DAMAGE IDENTIFICATION BASED ON THE RELATIVE ELEMENT STIFFNESS COEFFICIENT[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 39-42. doi: 10.13204/j.gyjz201308008

Citation:

Du Yongfeng, Li Zhuohang, Li Hui. STUDY ON STRUCTURAL DAMAGE IDENTIFICATION BASED ON THE RELATIVE ELEMENT STIFFNESS COEFFICIENT[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 39-42. doi: 10.13204/j.gyjz201308008

Citation:

PDF( 0 KB)

STUDY ON STRUCTURAL DAMAGE IDENTIFICATION BASED ON THE RELATIVE ELEMENT STIFFNESS COEFFICIENT

doi: 10.13204/j.gyjz201308008

1.
1. Institute of Earthquake Protection and Disaster,Lanzhou Univ.of Tech,Lanzhou 730050,China;
2.
2. Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education,Lanzhou Univ.of Tech,Lanzhou 730050,China

Received Date: 2013-03-20
Publish Date: 2013-08-20

Abstract

Abstract

A kind of damage identification method was proposed based on relative element stiffness coefficient.Damage index of structure was defined as the ratio of the variation of relative element stiffness to the undamaged one, relative element stiffness was a function of modal parameters.Then, utilizing the modal parameter, damage of structure can be identified clearly.On the basis of soft Simulink, a structure was used to demonstrate the feasibility of the presented method, the relative stiffness of damaged and undamaged structure was calculated, and then damage index was required as defined.The results showed that the method could efficiently identify the damage position and degree of structure.
- damage identification,
- modal parameter identification,
- Bayesian modal parameter identification,
- multiplesite damage (MSD)

FullText(HTML)

References(7)

References

[2] Doebling S W, FaRRaR C R, PRime M B, et al. Damage?Identification and Health MonitoRing of StRuctuRal and Mechanical?Systems fRom Changes in TheiR VibRation ChaRacteRistics: a?LiteRatuRe Review [R].Los Alamos, Los Alamos National?LaboRatoRy RepoRt LA －13070－ MS,1996.

孙晓丹,欧进萍.基于小波包和概率主成分分析的损伤识别[J].工程力学,2011,28(2):12－17.

[3] 郭惠勇,李正良,彭川.结构损伤动力识别技术的研究与进展[J].重庆建筑大学学报,2008,30(1):140－145.

[4] Siu － Kui Au, ASCE AM. Fast Bayesian FFT Method foR Ambient?Modal Identification with SepaRated Modes [J].JouRnal of?EngineeRing Mechanics,2011,137(3):214－226.

[5] Siu － Kui Au. Fast Bayesian Ambient Modal Identification in the?FRequency Domain, PaRt II: PosteRioR UnceRtainty [J].Mechanical Systems and Signal PRocessing,2012,26:76－90.

[6] Siu － Kui Au. Fast Bayesian Ambient Modal Identification in the?FRequency Domain, PaRt I: PosteRioR Most PRobable Value[J].Mechanical Systems and Signal PRocessing,2012,26:60－75.

[7] Yuen K V, Katafygiotis L S, Beck J L. SpectRal Density Estimation?of Stochastic VectoR PRocesses[J].PRobab. Eng,2002(2):81－95.

Relative Articles

Supplements(0)

Cited By

Proportional views