Dynamics of double bottom commercial vehicles
by M.J. Vanderploeg, J.E. Bernard
International Journal of Vehicle Design (IJVD), Vol. 6, No. 2, 1985

Abstract: The subject of this paper is the double bottom commercial vehicle which, in some configurations, has had severe stability problems. Through a literature review and linear analysis, it is shown that in the so-called Michigan Double configuration the pup trailer behaves in a volatile way in a lane change manoeuvre. Various design alternatives are shown to offer some improvement. The best design, from a directional response point of view, is clearly the so-called Canadian Double, which is a tractor-semitrailer-semitrailer configuration. The subject is then briefly analyzed from a point of view of rollover using quasi-static assumptions. The analysis indicates that striking gains in roll stability may be attained by roll coupling the pup trailer to the semitrailer, a characteristic inherent in the design of the Canadian Double.

Online publication date: Sun, 25-May-2014

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