Analysis of Vehicle Rollover Dynamics.pdf (3.1 MB)
Analysis of vehicle rollover dynamics using a high-fidelity model
journal contribution
posted on 2014-06-04, 12:28 authored by Maciej P. Czechowicz, Georgios MavrosGeorgios MavrosRecent data show that 35% of fatal crashes in sport utility vehicles included vehicle rollover. At the same time, experimental testing to improve safety is expensive and dangerous. Therefore, multi-body simulation is used in this research to improve the understanding of rollover dynamics. The majority of previous work uses low-fidelity models. Here, a complex and highly nonlinear multi-body model with 165 degrees of freedom is correlated to vehicle kinematic and compliance (K&C) measurements. The Magic Formula tyre model is employed. Design of experiment methodology is used to identify tyre properties affecting vehicle rollover. A novel, statistical approach is used to link suspension K&C characteristics with rollover propensity. Research so far reveals that the tyre properties that have the greatest influence on vehicle rollover are friction coefficient, friction variation with load, camber stiffness and tyre vertical stiffness. Key K&C characteristics affecting rollover propensity are front and rear suspension rate, front roll stiffness, front camber gain, front and rear camber compliance and rear jacking force. © 2014 Taylor & Francis.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Published in
Vehicle System DynamicsVolume
52Issue
5Pages
608 - 636Citation
CZECHOWICZ, M.P. and MAVROS, G., 2014. Analysis of vehicle rollover dynamics using a high-fidelity model. Vehicle System Dynamics, 52 (5), pp. 608–636.Publisher
© Taylor & FrancisVersion
- SMUR (Submitted Manuscript Under Review)
Acceptance date
2013-11-04Publication date
2014-02-11Notes
This article was published in the journal, Vehicle System Dynamics [© Taylor & Francis] and the definitive version is available at: http://dx.doi.org/10.1080/00423114.2013.863362ISSN
0042-3114eISSN
1744-5159Publisher version
Language
- en