Dynamic Behavior of Orthotropic Rectangular Plates under Moving Loads
Publication: Journal of Engineering Mechanics
Volume 129, Issue 1
Abstract
The dynamic behavior of an orthotropic plate simply supported on a pair of parallel edges and under a system of moving loads is analyzed based on Lagrange equation and modal superposition. Thin plate theory is assumed for the plate model and no restriction is placed on the type of loading. Parameters of the plate affecting its dynamic behavior are discussed, and a new classification of the plates for computing the mode shapes and natural frequencies is proposed. The impact factors and the dynamic responses of a typical bridge deck are studied using the proposed method. Preliminary results indicate that the effect of eccentric loads on the impact factor depends on the proportion ratio between the flexural and torsional rigidities of the bridge deck, and the multilane loading case is less critical than a single-lane loading case.
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Information
Published In
Journal of Engineering Mechanics
Volume 129 • Issue 1 • January 2003
Pages: 79 - 87
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jun 21, 1999
Accepted: Jun 13, 2002
Published online: Dec 13, 2002
Published in print: Jan 2003
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