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Moving force identification - A frequency and time domains analysis

Law, S.S., Chan, Tommy H.T., & Zeng, Q.H. (1999) Moving force identification - A frequency and time domains analysis. Journal of Dynamic Systems, Measurement, and Control, 121(3), pp. 394-401.

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Abstract

This paper addresses the problem of identifying a system of forces from vehicle crossing a guideway using only the vibration responses caused by the forces as the input without knowledge of the vehicle characteristics The vehicle is modeled as a single axle and two-axle loads with fixed axle spacing moving on a simply supported beam with viscous damping. The equations of motion of the beam are obtained through modal coordinate transformation, and the resulting set of equations relating the Fourier transforms of the responses and the moving forces are converted into time domain by a new method proposed by the authors. Correctness of the identified forces are checked by the correlation between the measured responses and the responses reconstructed with the identified forces moving on the beam. Experimental result shows that the method is effective to give good correlation when both measured bending moment and acceleration are rued, and it is faster and it gives more accurate estimate of the total mass of the vehicle than an existing method.

Impact and interest:

73 citations in Scopus
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50 citations in Web of Science®

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ID Code: 12816
Item Type: Journal Article
Additional Information: Self-archiving of the author-version is not yet supported by this publisher. For more information, please refer to the journal's website (see hypertext link) or contact the author.
Keywords: moving force identification, weigh, in, motion, bridges, loadings, loads
DOI: 10.1115/1.2802487
ISSN: 0022-0434
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 1999 ASME
Deposited On: 03 Mar 2008
Last Modified: 11 Aug 2011 04:36

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