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Nonlinear Dynamics of a Four-Wheel Vehicle With Lateral Load Transfer Effects

[+] Author Affiliations
Vincent Nguyen, Balakumar Balachandran

University of Maryland, College Park, MD

Gregory Schultz

U.S. Army Aberdeen Test Center, Aberdeen, MD

Paper No. DETC2007-34686, pp. 1975-1985; 11 pages
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5: 6th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B, and C
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4806-X | eISBN: 0-7918-3806-4


Two-dimensional, in-plane maneuvers are investigated by using a four-wheel vehicle model. Individual tire slip angles and loading conditions are considered. Lateral load transfer and roll moment distribution effects are included in the two-dimensional analysis by applying instantaneous roll angle propagation. Numerical simulations are performed for a heavily loaded vehicle. Bifurcations of equilibria are presented with respect to vehicle velocity and roll stiffness. This effort provides a framework for vehicle handling assessment in terms of nonlinear regions of performance, transient behavior, and roll moment distribution.



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