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Optimization of grouser shape ratio for coastal terrain driving device using discrete element method

Authors
Kim, Ji-TaeChoi, Hyuek-JinOh, Jae-WonPark, Young-Jun
Issue Date
12월-2023
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Discrete element method (DEM); Coastal terrain; Terramechanics; Grouser optimization; Driving performance
Citation
JOURNAL OF TERRAMECHANICS, v.110, pp 27 - 37
Pages
11
Journal Title
JOURNAL OF TERRAMECHANICS
Volume
110
Start Page
27
End Page
37
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9520
DOI
10.1016/j.jterra.2023.07.004
ISSN
0022-4898
1879-1204
Abstract
Using the discrete element method (DEM), this study derived the optimal shape ratio of a grouser driving in a coastal terrain. To develop a DEM model that considers the properties of the coastal terrain, exper-iments were performed on the physical and mechanical properties of the terrain, and parameters of the DEM model were calibrated using the experimental results. In addition, a terramechanical experiment was performed to validate the DEM model, for which parameters were calibrated. Furthermore, simula-tions were performed on the change in thrust according to the existence or nonexistence of the grouser and the change in thrust and sinkage according to the shape ratio using the validated DEM model. Consequently, the track with grouser generated a larger thrust than that without the grouser. Thus, the optimal shape ratio range of coastal terrain was derived using the DEM model, considering the mechanical properties of the terrain.& COPY; 2023 ISTVS. Published by Elsevier Ltd. All rights reserved.
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Choi, Hyuek Jin
해양공공디지털연구본부 (해사안전·환경연구센터)
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