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Rollover Study of a Heavy Truck Combination with Two Different Semi-Trailer Suspension Configurations
Technical Paper
2014-36-0025
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Brazil presents a very diverse road and traffic conditions and due to several factors the number of truck accidents is very high. Inside truck accidents group, the one that causes the highest number of losses and fatalities is the rollover crash and understanding rollover dynamics is very important to prevent such events.
The diversity of cargo vehicles arrangements requires a detailed study regarding the dynamic behavior these vehicle combinations in order to increase operation safety. The same tractor unit can be used with different types and numbers of trailers and/or semi-trailers, each one with different suspension configurations. These truck combinations have distinct dynamic performances that need evaluation. In this sense, this work presents a first phase study on the dynamic behavior of different types of cargo vehicle configuration. A 6×2 tractor is combined with a two distinct grain semi-trailer with different types of suspension: pneumatic and leaf spring. The study is conducted in order to verify the difference in dynamic behavior and the resulting stability of the two configurations in different conditions of speed and maneuvers.
The study was conducted with simulation models developed within TruckSim® simulation software, with calibrated data from tests previously performed. The simulations were carried out according to the main standards tests used for this kind of analysis - Slalom, Double Lane Change (DLC) and Step Steer maneuvers, to check the directional behavior and limit rollover of both truck combinations. The simulations showed significant changes with respect to the behavior of the combinations, depending on the type of used suspension, especially with regard to the rollover tendency. Different types of combinations with the same tractor show different lateral load transfer, not only depending on the arrangements and quantity of suspension axles, but also due to the different possible locations of loads. These results are interesting for a better understanding of the lateral dynamics of different cargo vehicle compositions, in order to establish better safety margins against the rollover threshold and to accomplish future setups for the electronic control stability systems of combination trucks.
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Citation
Barbieri, F., Lima, V., Garbin, L., and Boaretto, J., "Rollover Study of a Heavy Truck Combination with Two Different Semi-Trailer Suspension Configurations," SAE Technical Paper 2014-36-0025, 2014, https://doi.org/10.4271/2014-36-0025.Also In
References
- A diagnostic of truck accidents PAMCARY Insurance Company São Paulo 2007
- Arant , M. , Nelson S. , Attanayake U. , Hathaway R. , Keil M. , Ro K. , Franzese O. , Knee H. , LaClair T. , and Pape D. 2009 U19: Heavy truck rollover characterization (Phase-B) final report Final report to National Transportation Research Center, Inc. University Transportation Center
- Blower , D. and Woodrooffe , J. Survey of the Status of Truck Safety: Brazil, China, Australia and United States UMTRI Michigan 2012
- Asconcellos E.A. Urban Transportation in Brazil Le Monde Diplomatique Brasil 2012
- Winkler C. B. , Ervin R. D. Rollover of Heavy Commercial Vehicles The University of Michigan Transportation Research Institute, UMTRI-99-19, Great Lakes Center for Truck and Transit Research Ann Arbor, Michigan 1999
- Gillespie , T. D. Fundamentals of Vehicle Dynamics SAE Warrendale, PA 1992
- DOT HS 809 569 An Analysis of Fatal Large Truck Crashes U.S. Department of Transportation, National Highway Traffic Safety Administration June 2003
- Heavy Vehicle Stability Guide Land Transport Safety Authority New Zealand 2000
- Mechanical Simulation Corporation (MSC) TruckSim 8.2 Reference Manuals 2013
- Boaretto J. Structural behavior of a semitrailer chassis submitted to operations related to lateral and vertical dynamics Master degree dissertation UFRGS 2012
- Flitch , J. W. Motor Truck Engineering Handbook SAE Warrendale, PA 1994
- ISO 7401 Road vehicles - Lateral transient response test methods - Open loop test methods test method International Standard Organization ISO 7401:2003(E)
- ISO 3888-1 Passenger cars - Test track for a severe lane change maneuver - Part 1: Double lane change International Standard Organization ISO 3888-1:1999(E)
- ISO 3888-2 Passenger cars - Test track for a severe lane change maneuver - Part 2: Obstacle avoidance International Standard Organization ISO 3888-1:1999(E)
- ISO 14791 Road vehicles -- Heavy commercial vehicle combinations and articulated buses -- Lateral stability test methods 2000
- Alvarez , A. C. C. et al. Vehicle Dynamics Simulation at Commercial Vehicle Development SAE Technical Paper 2012-36-0018 2012 10.42712012-36-0018/
- Fancher , P. S. ; Ervin , C.B. ; Gillespie , T.D. A factbook of the mechanical properties of the components for single-unit and articulated heavy trucks The University of Michigan Transportation Research Institute Ann Arbor, Michigan 1986