An Assessment of Tank Truck Roll Stability

نویسنده

  • J. D. Patten
چکیده

Transport Canada’s Dangerous Goods Directorate (TDG) data base of crashes involving a vehicle carrying dangerous goods shows 810 rollovers in 1,874 reported crashes from 1990 to 1998, and 83% of these involved highway tank trucks. TDG is therefore considering approaches to improve the rollover stability of tank trucks used for highway transportation of dangerous goods. TDG asked the Centre for Surface Transportation Technology of National Research Council Canada (NRC/CSTT) to conduct tilt tests to determine the rollover threshold and rollover characteristics of tank truck configurations. 17 vehicles were tested, which included the principal configurations of tank truck in service across Canada, and between Canada and the U.S. A computer simulation was shown to be able to match the rollover characteristics and roll threshold of each vehicle tested, including those where the liftable axles of vehicles so equipped were raised. The simulation was used to project the lowest roll threshold of each vehicle, with tanks full and loaded to its allowable gross weight. National regulatory authorities have adopted 0.40 g as the minimum roll threshold for tank trucks. 7 of 17 (41%) distinct vehicles tested here would have a roll threshold under 0.35 g when loaded to their allowable gross weight in Ontario, while 14 of 17 (83%) would have a roll threshold under 0.40 g. The roll threshold of a vehicle with liftable axles drops by 0.010.03 g when those axles are raised to turn. This paper presents the background and results of this study, with some discussion of vehicle design and configuration issues. AN ASSESSMENT OF TANK TRUCK ROLL STABILITY J.R. Billing and J.D. Patten National Research Council of Canada

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تاریخ انتشار 2006