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International Journal of Automotive Technology > Volume 23(5); 2022 > Article
International Journal of Automotive Technology 2022;23(5): 1329-1335.
doi: https://doi.org/10.1007/s12239-022-0116-9
DYNAMIC ANALYSIS OF A WHEEL RUNNING ON SANDY ROAD ACCORDING TO SLIP RATIO AND ITS VALIDATION
Ji Su Jeong 1, Dae Kyung Lee 1, Jeong Hyun Sohn2 2
1Department of Smart Robot Convergence and Application Engineering, Pukyong National University
2Department of Mechanical Design Engineering, Pukyong National University
PDF Links Corresponding Author.  Jeong Hyun Sohn2  , Email. jhsohn@pknu.ac.kr
ABSTRACT
The discrete element method is widely used to analyze the dynamic behavior of a wheel driving on the sandy road. The tetra clustering model for generating arbitrary shape of a particle is developed. A contact method between a wheel and numerous particles is developed to carry out simulation. A wheel testbed experimental setup is established for investigating the contact phenomenon between a wheel and sand particles. A high-speed camera is used for capturing the motion of the wheel. The technique for solving multibody dynamics and particle dynamics simultaneously is suggested. The repose angle test is carried out to obtain the contact parameter between particles. The static equilibrium test of a wheel is performed to obtain the contact parameter between a wheel and particle. The dynamic motion of the wheel according to the slip ratio is compared with experiments. According to results, simulation results show a good agreement with experiments.
Key Words: Discrete element method, Contact analysis, Slip ratio, Sandy road
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