Modelling and Dynamic Analysis of a Heavy Duty Truck with Rear Tandem Axle Bogie Suspension System

Engineers Australia
Publication Type:
Conference Proceeding
Proceedings of the 6th Australiasian Congress on Applied Mechanics, 2010, pp. 1 - 8
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This paper presents details of modelling of a heavy duty truck multi-body system with rear tandem axle bogie suspension system. There are two existing approaches are used for modelling the tandem suspension, one is FEM based and computation intensive and the other is based a simplified modes but with limited accuracy. A new simplified model of the tandem suspension is proposed for improving the heavy track modelâs accuracy in handling performance analysis and computation efficiency. The investigation focuses on comparative analysis of dynamic performance, rollover prevention in particular, of this tri-axles heavy duty truck. A quasi-static tilt table test is carried out to evaluate the static roll threshold (SRT) of the heavy duty truck with two simplified tandem suspension models. Furthermore, for dynamic rollover evaluation, specific simulations are conducted to show the rollover stability of the truck using these three tandem suspension models. The obtained results indicate that the proposed new simplified tandem suspension model is superior over the existing one. Such a simplified but accurate model will enable the efficient handling performance analysis of heavy duty trucks fitted with complex suspensions, e.g., hydraulic interconnected suspensions.
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