Title: Study of tyre-terrain interaction of a military vehicle

Authors: Lucas Castro Sousa; Ricardo Teixeira Da Costa Neto

Addresses: Department of Mechanical Engineering, Military Institute of Engineering, Rio de Janeiro, RJ, 22290-270, Brazil ' Department of Mechanical Engineering, Military Institute of Engineering, Rio de Janeiro, RJ, 22290-270, Brazil

Abstract: Wheeled military vehicles are often used on deformable terrains. In order to understand their performance, a tyre-terrain interaction model is required. The aim of this paper is to present the application of semi-empirical tyre models based on Wong-Reece models in order to investigate the drawbar pull, resistive torques, the sinkage and the stress distributions beneath each tyre of a six-wheeled military vehicle. An accurate prediction of terrain forces is of interest to engineers and vehicle designers to understand the vehicle performance. Furthermore, a heavy military vehicle can be immobilised due to particular terrain properties. In a combat situation, an immobilised vehicle can be dire. The military vehicle was simulated on compact sand and dry sand when the tyre behaves like a rigid wheel in driven and towed conditions.

Keywords: military vehicles; wheel mechanics; deformable terrains; mobility prediction; Wong-Reece theory.

DOI: 10.1504/IJHVS.2021.117503

International Journal of Heavy Vehicle Systems, 2021 Vol.28 No.3, pp.423 - 434

Received: 06 Dec 2018
Accepted: 17 Jun 2019
Published online: 10 Sep 2021 *

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