Investigating Vehicle Behavior on a Sloped Terrain Surface

Uzunsoy, Erdem; Bolarinwa, Emmanuel; Olatunbosun, Oluremi; He, Rui

doi:10.4271/2014-01-0857

Cited by 1 publication

(2 citation statements)

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“…A trade-off was found by Stine et al between designing a median to prevent vehicular rollover and designing it for preventing median crossovers, after a total run of 111,132 simulations in CarSim TM [6]. Reliability of applying CarSim TM in such research was validated by Uzunsoy et al [7] by comparing the result of simulation with that of physical off-road tests.…”

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confidence: 92%

“…CarSim TM provides a reliable simulation environment for the dynamics of an errant vehicle as its non-linear Multi-Body Dynamics vehicle model has been shown to reflect the vehicle dynamics property of real vehicles running on the sloped terrain surface of a road median [7]. However, it cannot simulate the collision with the containment barrier.…”

Section: Methodsmentioning

confidence: 99%

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Analysis of Highway Sloped Median Performance for Containment of Errant Vehicles

Olatunbosun¹,

He²,

Shitta-Bey³

2018

WJET

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Errant vehicles occur as a result of the driver losing control of the vehicle. This may be due to sudden illness, dozing off or skidding while attempting a manoeuvre. In containing such an errant vehicle on a highway, the priority is to avoid collision with other vehicles. A sloped highway median provides a run-off area for such vehicles where the vehicle can be slowed down and stopped without the danger of being re-directed into the path of other vehicles as may occur with edge barriers. Here, the effect of a containment barrier at the bottom of the sloped median is studied with a view to prevent the vehicle from being redirected outside the median after colliding with the barrier. The focus of this work is on the change of kinematic states due to the collision, so a momentum-based vehicle collision analysis is developed, with the collision energy loss related to the vehicle stiffness being considered by coefficient of restitution. The average maximum lateral displacements post-collision are read from the diagram of vehicle x-y trajectories. In this way, the most suitable median slope 1:6 is selected.

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confidence: 92%

Section: Methodsmentioning

confidence: 99%