Simulation of Tractive Performance of Off-road Tire on Gravel Road by Combined Finite Element-discrete ElementMethod and Experimental Validation

doi:10.3969/j.issn.1000-1093.2019.09.022

Abstract

Abstract: The research on the interaction between off-road tires and soft ground is of great significance to improve the travel performance of off-road vehicle on soft ground. The interaction between tire and soft ground can not be described by the finite element method or the discrete element method effectively. A FEM-DEM model in which the off-road tire is modeled by the finite elements and the gravel road is modeled by the discrete elements was established based on the indoor single wheel soil bin test. The proposed model can be used to accurately describe the complex mechanical properties of off-road tire and the granular features of gravel road. The tractive performance of off-road tire on gravel road at different slip rates is simulated by using the combined finite element-discrete element method in LS-DYNA. The tractive performance parameters of off-road tire, such as tire tractive force and rim sinkage, at different slip rates were obtained and investigated. The numerically simulated results are basically corresponded with the experimental results, which verifies the validity of the combined finite element and discrete element method in studying the interaction between tire and soft ground. Key

Key words: off-roadtire, gravelroad, tractiveperformance, combinedfiniteelementanddiscreteelementmethod

CLC Number:

U461.5⁺1

XU Weipan， ZENG Haiyang， JIANG Chao， KOU Xizheng， ZANG Mengyan. Simulation of Tractive Performance of Off-road Tire on Gravel Road by Combined Finite Element-discrete ElementMethod and Experimental Validation[J]. Acta Armamentarii, 2019, 40(9): 1961-1968.

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