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TECHNICAL PAPERS

Lateral Dynamics and Stability of Two Full Vehicles in Tandem

[+] Author and Article Information
N. A. El-Esnawy, J. F. Wilson

Department of Civil and Environmental Engineering, Duke University, Durham, NC 27708-0287

J. Dyn. Sys., Meas., Control 120(1), 50-56 (Mar 01, 1998) (7 pages) doi:10.1115/1.2801321 History: Received March 20, 1996; Online December 03, 2007

Abstract

The lateral dynamics and stability of two full vehicles in tandem are investigated. The nonlinear differential equations of motion of this four-axle articulated vehicle system are presented in matrix form and then linearized. The critical forward velocity of the steady state for oversteering conditions is derived in a closed form, and the criteria for understeer, neutral steer, or oversteer are given. Uncertainty of the critical forward velocity and its sensitivity to errors in the system parameters are evaluated using the root mean square method. Conditions for nonoscillatory and oscillatory instabilities of the linearized vehicle system are given. Effects of the critical system parameters (mainly the mass distribution) on the stability are investigated.

Copyright © 1998 by The American Society of Mechanical Engineers
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