Abstract
The occurrence of several non-slewing articulated mobile (NSAM) crane tipping accidents in Australia has raised concerns about their stability. This paper examines the inherent stability of the NSAM crane design. It does this using geometrical modelling and theoretical static force analysis. An investigation into the tip-over and roll-over stabilities of the model under a number of static conditions is presented. The results suggest that having the articulation joints at the centre of wheelbase is a suitable design for the NSAM cranes for the manoeuvrability and tip-over stability but not for the roll-over stability.
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