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An Experimental Study on the Transient Behavior of Vehicle Rollover  

Lee, Myung-Su (Division of Vehicle Regulation Research KATRI)
Kim, Sang-Sup (School of Mechanical & Automotive Enginnering, Kookmin University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.19, no.3, 2011 , pp. 113-121 More about this Journal
Abstract
Rollover accident is one of the serious traffic accident and rollover accident takes high portion of all accident. The most common type of rollover is a tripped rollover which occupy 95% of all type of single-vehicle rollover. Tripped rollover occurs when a vehicle leaves normal road way and tripped by loose gravel, soil of fixed object such as guard rail, curbs and ditches. And the rest of the type of rollover is un-tripped rollover. An un-tripped rollovers that occurs during high-speed collision avoidance maneuvers. In this paper, presents the explanation of the un-tripped rollover test method and procedure, additionally this paper deals with various occurrence in the un-tripped test such as occurring excessive tire camber in the un-tripped test, tire side-wall contact with road surface and roll oscillation. And this paper analyzes the analysis of the roll rate amplitude in specific frequency through the FFT (Fast Fourier Transform) and the roll angle at the steering reverse timing which is the Fishhook test roll rate feedback time. Finally, this paper analyzes the relations between the estimated steady state roll gain and rollover stability.
Keywords
Rollover; Roll oscillation; FFT; Steering reverse; Roll gain;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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