Title: Building a novel dynamics rollover model for critical instability state analysis of articulated multibody vehicles

Authors: Qingyuan Zhu; Chaoping Yang; Huosheng Hu; Xiongfeng Wu

Addresses: Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen, 361005, China; Fujian Collaboration Innovation Centre for R&D of Coach and Special Vehicle, Xiamen University of Technology, Xiamen, 361005, China ' Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen, 361005, China ' School of Computer Science & Electronic Engineering, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, UK ' Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen, 361005, China

Abstract: Articulated wheel loaders in construction industry have poor lateral stability and high rate of accident due to their multibody structure and uneven working fields. In order to realise early rollover warning and active control, it is necessary to explore the mechanism of instability and the change rules of dynamics parameters. This paper proposes a novel dynamics rollover model with 6 degrees of freedom (DOF) for modelling the instability process of an articulated wheel loader. The proposed rollover model is compared with a virtual prototype and a 1:5 scale-down physical prototype under four typical working conditions to verify its reliability, and its accuracy is investigated via a rotation motion under a constant steering angle under the critical state of rollover. Finally, the dynamics rollover model is used to investigate the influence of different kinematic parameters on lateral stability of an articulated wheel loader with steady-state margin angle (SSMA) as stability index.

Keywords: articulated wheel loader; dynamics model; lateral stability.

DOI: 10.1504/IJHVS.2021.117497

International Journal of Heavy Vehicle Systems, 2021 Vol.28 No.3, pp.329 - 352

Received: 24 Oct 2017
Accepted: 02 Jul 2018

Published online: 10 Sep 2021 *

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