Development of a higher-order model for a roll simulator Online publication date: Thu, 30-Oct-2014
by Scott B. Zagorski; Dennis A. Guenther; Gary J. Heydinger
International Journal of Vehicle Design (IJVD), Vol. 66, No. 1, 2014
Abstract: A four degree-of-freedom model of a roll simulator is developed. The roll simulator consists of a sled-platform assembly, where a recreational off-highway vehicle (ROV) is mounted to the platform which has the freedom to rotate up to 90 degrees. The purpose of the roll simulator is to re-create rollover manoeuvres ascertained from in-field vehicle dynamic experiments. Previous studies developed a two degree-of-freedom model; one for translational and one for rotational motion. This study expands on that model and increases the number of degrees-of-freedom to more closely emulate the roll simulator. The model incorporates non-linear stiffness models of the wire ropes and enables the model to have three translational degrees-of-freedom and one rotational degree-of-freedom. The equations of motion (EOM) are numerically simulated using Matlab's Simulink. Comparisons are made with experimental data derived from the roll simulator to validate the model.
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