Research

Identification of Nottingham Wilford Bridge modal parameters using wavelet transforms


Reference:

Meo, M., Zumpano, G., Meng, X., Roberts, G. and Dodson, A., 2004. Identification of Nottingham Wilford Bridge modal parameters using wavelet transforms. In: Smart Structures and Materials 2004: Modeling, Signal Processing, and Control. Vol. 5383. SPIE, pp. 561-570. (Proceedings of the SPIE)

Related documents:

This repository does not currently have the full-text of this item.
You may be able to access a copy if URLs are provided below.

Official URL:

http://dx.doi.org/10.1117/12.541501

Abstract

Studies have been conducted on the identification of modal parameters including natural frequencies, damping coefficients and mode shapes of the Nottingham Wilford Bridge using ambient excitation. An approach to estimate modal parameters, from only output data (in the time domain) using the wavelet transform, is presented. Displacements responses of this structural system are used in the wavelet transform to identify its dynamic characteristics. To measure real-time displacement of the bridge a global positioning system (GPS) sensor network was designed and installed on the bridge. The modal properties were extracted using a two-step methodology. In the first step, the random decrement method was used to transform random signals in free vibration responses. Finally, the Eigensystem Realization Algorithm and a Wavelets based technique were used to extract natural frequencies and to determine the mode shapes of the structure.

Details

Item Type Book Sections
CreatorsMeo, M., Zumpano, G., Meng, X., Roberts, G. and Dodson, A.
DOI10.1117/12.541501
DepartmentsFaculty of Engineering & Design > Mechanical Engineering
StatusPublished
ID Code22545
Additional InformationInformation: Smart Structures and Materials 2004 Conference, 15-18 March 2004, San Diego, CA.

Export

Actions (login required)

View Item