Research on the Structural Damage Detection with Virtual Laminated Element Modeling Technique

Abstract:

A new kind of combined finite element named three-dimensional virtual laminated element and its deduce process is introduced. The new finite element was proved to be convenient, accurate and efficient in the calculation of bridge structures by a modal test and corresponding numerical example. Then some research and discussion were done, which show that with small modal construction scale being comparative with beam element, the static and dynamic spatial behavior of complicated structures can be simulated precisely. Furthermore, it is sensitive to structural damages, and more damage information can be obtained than corresponding spatial beam element, which means it is highly promising in the application of structural damage detection.

• Periodical: Applied Mechanics and Materials (Volumes 501-504)
• Pages: 1368-1373
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.501-504.1368
• Online since: January 2014
• Authors: Wan Li Yang*, Ji Ping Li, Xiao Hui Ju
• Keywords: Combined Element, Damage Detection, Modal Test, Modeling Technique, Virtual Laminated

References

[1] A. K. Pandey et al, Damage Detection from changes in curvature mode shapes[J]. Journal of Sound and Vibration, 1991, 145(2) : 321-332.

DOI: 10.1016/0022-460x(91)90595-b

[2] Carden EP, Fanning P. Vibration based condition monitoring: a review. Structure Health Monitor 2004; 3(4): 355–77.

[3] Hamey CS, Lestari W, Qiao P, Song G. Experimental damage identification of carbon/epoxy composite beams using curvature mode shapes. Struct Health Monitor 2004; 3(4): 333–53.

DOI: 10.1177/1475921704047502

[4] Lu Xi, Huo Da, Study of Real Bridge Model Damage Detection Based on Curvature Mode Theory[J], V01. 38, No. 8, Aug, 2005, pp.61-66, 79.

[5] D.S. Ling, J.J. Zhang, Y.Q. Xiang, X. Xu. Layer element theory and application of it to bridge engineering[J]. Journal of Civil Engineering, 1998(3).

[6] X.Q. Du, Y.Q. Xiang, X. Xu, New laminated block element and its application in engineering[J], China Journal of Highway and Transport, 2002(15)2, pp.72-75.

[7] D. Wu and S. S. Law, Damage localization in plate structures from uniform load surface curvature[J], Journal of Sound and Vibration, Vol 276, Issues 1-2, 6 Sep, 2004, pp.227-244.

DOI: 10.1016/j.jsv.2003.07.040

[8] D.S. Ling，X. Xu，Nonlinear FEM and Program[M], Hangzhou, Zhejiang University Press, (2004).

[9] Y.Q. XIANG &J.F. WANG. Advance in Health Monitoring and Assessment Theory of Long Span Concrete Bridge and application, The Proceeding of 4th China-Japan-US Symposium on Structural Control and Monitoring. Oct. 16-17, (2006).