Abstract
The lateral stiffness of articulated dump truck is relatively weak. When articulated dump truck is running, the driving stability is deteriorated and it is prone to occur “snake shape” instability phenomena. Taking the force and its mechanical characteristics of articulated dump truck with three axles into account, the dynamic mathematical model of the 3-DOF was established using the Lagrange equation. Based on the Lyapunov stability principle, the driving stability of articulated dump truck was analyzed using the eigenvalue method. The dynamic mathematical model can be used to analyze the influence of the following parameters on driving stability, such as different speed, centroid position, steering parameters, wheelbase, mass etc. It can provide theoretical basis for parameters optimization in stability control and stability design.
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