Volume 12, Number 23 (9-2016) | 2016, 12(23): 93-104 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Hosseinlou F, Mojtahedi A, Lotfollahi3 M A. Evaluating A Feature Extraction Algorithm For Damage Detection of Offshore Jacket Platforms Using Physical Model And Finite Element Model Updating. International Journal of Maritime Technology. 2016; 12 (23) :93-104
URL: http://ijmt.ir/article-1-411-en.html

PhD candidate university of tabriz
Abstract:   (809 Views)

One of the most important items in the field of engineering and design of structures is safety assessment. It is usually complicated, due to uncertainty in determining the most important parameters in the final design. This paper describes a new method for updating stiffness matrix structure that is capable of identifying the damage to individual members, when limited modal data is available by using results of the experiment on physical model of the offshore jacket platforms. We evaluated selection procedure inactive degrees of freedom in the process reduced model with a reasonable criterion by using the sensitivity analysis of system response under base excitation. This performance leads to faster convergence of iterative algorithm. Also, in this study, with using the finite element model updating based on the empirical models, it was considered during the process as much as possible to overcome the problem of uncertainty in modeling.

Full-Text [PDF 1361 kb]   (212 Downloads)    
Type of Study: Research Paper | Subject: Offshore Structure
Received: 2015/04/19 | Accepted: 2016/10/30

1. Grewal, G.S., Lee, M.K., (2004), Strength of minimum structure platforms under ship impact. Journal of Offshore Mechanics and Arctic Engineering, Vol. 126(4), p. 368-375.
2. Ewins, D.J., (2000), Modal Testing: Theory, Practice and Application. Second ed. Research Studies Press Ltd.
3. Hu, S.L.J, Li H., Wang, S.H., (2007), Cross-model cross-mode method for model updating. Mechanical Systems and Signal Processing, Vol. 21, p. 1690-1703.
4. Cawley, P., Adams, R.D., (1979), The location of defects in structures from measurement of natural frequencies. Journal of Strain Analysis, Vol. 14 (2), p. 49-57.
5. Wang, S.Q., Li, H.J., (2012), Assessment of structural damage using natural frequency changes. Acta Mechanica Sinica, Vol. 28(1), p. 118-27.
6. Rytter, A., (1993), Vibration based inspection of civil engineering structures. PhD dissertation. Aalborg University, Denmark.
7. Kim, J.T., Stubbs, N., (1995), Damage detection in offshore jacket structures from limited modal information. Journal of Offshore and Polar Engineering, Vol. 5 (1), p. 58-66.
8. Mangal, L., Idichandy, V.G., Ganapathy, C., (1996), ART-based multiple neural networks for monitoring offshore platforms. Applied Ocean Research, Vol. 18, p. 137-143.
9. Li, H., Yang, H., Hu, S.L.J., (2006), Modal strain energy decomposition method for damage localization in 3D frame structures. Journal of Engineering Mechanics, ASCE, Vol. 132 (9), p. 941-951.
10. Hu, S.L.J., Wang, S.Q., Li, H.J., (2006), Cross modal strain energy for estimating damage severity. Journal of Engineering Mechanics, ASCE, Vol. 132(4), p. 429-37.
11. Wang, S.Q., (2013), Iterative modal strain energy method for damage severity estimation using frequency measurement. Structural Control and Health Monitoring, Vol. 20(2), p. 230-40.
12. Li, H., Wang, J., Zhang, M., Hu, S.L.J.,)2006(, Damage detection in offshore jacket structures by cross-model cross-mode method. Proceedings of the Seventh International Conference on Hydrodynamics. Naples, Italy, vol. 1, p. 171-178.
13. Law, S.S., Zhu, X.Q., (2009), Damage Models and Algorithms For Assessment of Structures under Operating Conditions. Taylor and Francis, CRC Press/Balkema, the Netherlands.
14. Jahn, H.A., (1948), Improvement of an approximate set of latent roots and modal columns of a matrix by methods akin to those of classical perturbation theory. Quarterly Journal of Mechanics and Appllied Mathematics, Vol.1, p. 132-144.
15. Lu, Z.R., Law, S.S., (2007), Features of dynamic sensitivity and its application in damage detection. Journal of Sound and Vibration, Vol. 303. (1-2) p. 305-329
16. Lu, Z.R., Law, S.S., (2007), Identification of system parameters and input force from output only. Mechanical Systems and Signal Processing, Vol. 21 (5) p. 2099-2111.
17. Hutton, D.V., (2004), Fundamentals of Finite Element Analysis. McGraw-Hill, New York.
18. Guyan, R.J., (1965), Reduction of stiffness and mass matrices. AIAA Journal, Vol. 3(2), p. 380.
19. Fu, Z.H, He, J., (2001), Modal Analysis. Butterworth-Heinemann. oxford.
20. Tshilidzi, M., (2010), Finite Element Model Updating Using Computational Intelligence Techniques. Applications to Structural Dynamics. Heidelberg, Springer.
21. Bayraktar, A., Sevim, B., Altunisik, A.C., (2011), Finite element model updating effects on nonlinear seismic response of arch dam–reservoir–foundation systems. Finite Elements in Analysis and Design, Vol. 47, p. 85-97.

Send email to the article author

Creative Commons License
International Journal of Maritime Technology is licensed under a

Creative Commons Attribution-NonCommercial 4.0 International License.