A framework for terrain-induced uncertainty quantification in vehicle dynamics simulation
by Makarand Datar, David Gorsich, David Lamb, Dan Negrut
International Journal of Vehicle Systems Modelling and Testing (IJVSMT), Vol. 4, No. 4, 2009

Abstract: This paper outlines a methodology for determining the statistics associated with the time evolution of a non-linear multi-body dynamic system operated under input uncertainty. The focus is on the dynamics of ground vehicle systems in environments characterised by multiple sources of uncertainty: road topography, friction coefficient at the road/tyre interface and aerodynamic force loading. Drawing on parametric, maximum likelihood estimation, the methodology outlined is general and can be applied to systematically study the impact of sources of uncertainty characterised herein by random processes. The proposed framework is demonstrated through a study that characterises the uncertainty induced in the loading of the lower control arm of an SUV type vehicle by uncertainty in the road topography.

Online publication date: Thu, 04-Mar-2010

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