Directional Response of a B-Train Vehicle Combination Carrying Liquid Cargo

[+] Author and Article Information
R. Ranganathan

Department of Mechanical and Aerospace Engineering, University of Missouri-Columbia, Columbia, MO 65211

S. Rakheja, S. Sankar

CONCAVE Research Centre, Department of Mechanical Engineering, Concordia University, Montreal, Quebec, Canada H3G 1M8

J. Dyn. Sys., Meas., Control 115(1), 133-139 (Mar 01, 1993) (7 pages) doi:10.1115/1.2897388 History: Received August 21, 1989; Revised March 03, 1992; Online March 17, 2008


Directional dynamics of a B-train tank vehicle is investigated by integrating the three-dimensional vehicle model to the dynamics associated with the movement of free surface of liquid within the partially filled tanks. The motion of the free surface of liquid due to instantaneous tank roll and lateral acceleration is computed assuming steady state fluid flow conditions. The influence of liquid motion on the dynamic response of the rearmost trailer is investigated for both constant and transient steer inputs, assuming constant forward speed. Directional response characteristics of the B-train tank vehicle are compared to those of an equivalent rigid cargo vehicle to demonstrate the destabilizing effects of the liquid movement within the tank vehicle. Directional response characteristics are further discussed for variation in weight density of liquid and thus the fill height, while the axle loads are held constant around maximum permissible values.

Copyright © 1993 by The American Society of Mechanical Engineers
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