Design of 'road friendly' suspensions for quarter and half heavy goods vehicle models by using genetic algorithm and a multi-objective performance index Online publication date: Sat, 13-Sep-2014
by M.J. Pable; P. Seshu
International Journal of Vehicle Systems Modelling and Testing (IJVSMT), Vol. 7, No. 1, 2012
Abstract: The main objective of present study is to design a road friendly suspension (which minimises road damage) for a heavy goods vehicle (HGV). Quarter HGV model and half HGV model are used to represent vehicle dynamics. Genetic algorithm has been used for optimisation. It is shown that, for less road damage, soft suspension spring and hard damper are required. For half HGV, the tyre station that has more road damaging potential has been optimised more. Even though the suspension is optimised for a uniform vehicle speed on a given random road profile, the optimised suspension is shown to perform well over a wide frequency range for a sinusoidal road excitation. It is also shown that the optimised passive suspension performs well for hump road input. A comparative study between multi-objective performance index and road damage performance index alone is also presented.
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