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RESEARCH PAPERS

Formulation of a Basic Building Block Model for Interaction of High Speed Vehicles on Flexible Structures

[+] Author and Article Information
L. Vu-Quoc

Department of Aerospace Engineering, Mechanics, and Engineering Science, University of Florida, Gainesville, Fla. 32611

M. Olsson

Division of Structural Mechanics, Lund University, S-221 00 Lund, Sweden

J. Appl. Mech 56(2), 451-458 (Jun 01, 1989) (8 pages) doi:10.1115/1.3176104 History: Received January 27, 1988; Revised August 23, 1988; Online July 21, 2009

Abstract

In traditional analyses of vehicle/structure interaction, especially when there are constraints between vehicle masses and the structure, vehicle nominal motion is prescribed a priori , and therefore unaffected by the structure flexibility. In this paper, a concept of nominal motion is defined, and a methodology is proposed in which the above restriction is removed, allowing the vehicle nominal motion to become unknown, and encompassing the traditional approach as a particular case. General nonlinear equations of motion of a building block model, applicable to both wheel-on-rail and magnetically levitated vehicles, are derived. These equations are simplified to a set of mildly nonlinear equations upon introducing additional assumptions — essentially on small structural deformation. An example is given to illustrate the present formulation.

Copyright © 1989 by ASME
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