A method is presented to identify indirectly loads moving on an orthotropic plate. The loads are in a group of two forces or four forces. The dynamic behavior of the plate under the action of these moving loads is analyzed. A method to identify these moving forces from the dynamic responses of the plate is developed basing on the modal superposition principle, and Tikhonov regularization procedure is applied to provide bounds to the solution in the time domain. Prior knowledge on the modal properties of the plate and the velocity of loads is required. The errors in the identified individual loads are discussed. The effect of different combinations of measuring locations on the identification is studied. Numerical results show that acceleration responses would give better and acceptable results than strain measurements.
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April 2001
Technical Papers
Identification of Moving Loads on an Orthotropic Plate
X. Q. Zhu, Graduate Student,
X. Q. Zhu, Graduate Student
Civil and Structural Engineering Department, Hong Kong Polytechnic University, Kowloon, Hong Kong
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S. S. Law, Associate Professor
S. S. Law, Associate Professor
Civil and Structural Engineering Department, Hong Kong Polytechnic University, Kowloon, Hong Kong
Search for other works by this author on:
X. Q. Zhu, Graduate Student
Civil and Structural Engineering Department, Hong Kong Polytechnic University, Kowloon, Hong Kong
S. S. Law, Associate Professor
Civil and Structural Engineering Department, Hong Kong Polytechnic University, Kowloon, Hong Kong
Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received June 2000; revised October 2000. Associate Editor: M. I. Friswell.
J. Vib. Acoust. Apr 2001, 123(2): 238-244 (7 pages)
Published Online: October 1, 2000
Article history
Received:
June 1, 2000
Revised:
October 1, 2000
Citation
Zhu, X. Q., and Law, S. S. (October 1, 2000). "Identification of Moving Loads on an Orthotropic Plate ." ASME. J. Vib. Acoust. April 2001; 123(2): 238–244. https://doi.org/10.1115/1.1349889
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