매개변수 민감도 분석을 통한 토양의 이산요소모델 개발
Development of Discrete Element Model of Soil through Parameter Sensitivity Analysis
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
신뢰성 있는 토양의 이산요소모델을 개발하기 위해서는 토양의 특성을 고려하여 매개변수를 교정해야 한다. 본 연구에서는 이산요소모델을구성하는 각 매개변수가 토양 입자의 거동에 미치는 영향을 분석하였고, 분석된 결과를 이용하여 토양의 이산요소모델을 개발하였다. 민감도 분석의대상이 되는 매개변수는 전단 계수, 마찰 계수, 표면 에너지 등으로 선정하였으며, 교정의 기준이 되는 토양의 특성은 가비중, 안식각, 점착력및 내부마찰각으로 선정하였다. 또한, 토성이 서로 다른 해안가, 논 및 밭을 구성하는 토양을 대상으로 연구를 수행하여 다양한 토성에 대한 적용성을확인하였다. 결과적으로 본 연구에서 수행한 민감도 분석 결과를 이용하여 각 토양의 거동을 모사할 수 있는 이산요소모델을 교정하였으며, 시험결과와의 비교를 통해 교정된 이산요소모델을 검증하였다.
Abstract
To develop a reliable soil discrete element model, parameters must be calibrated considering soil properties. In this study, the effectof each parameter constituting the discrete element model on the behavior of soil particles was analyzed, and developed a discrete elementmodel of soil using analyzed results. The parameters for sensitivity analysis were selected as shear modulus, friction coefficient, andsurface energy, and the soil properties that as the basis for calibration were bulk density, angle of repose, cohesion, and angle of internalfriction. In addition, research was conducted on soils that make up coastal, paddy fields, and upland with different soil textures, confirmingapplicability to various soil textures. As a result, a discrete element model capable of simulating the behavior of each soil was calibratedusing the sensitivity analysis results performed in this study, and the calibrated discrete element model was validated through comparisonwith the test results.
참고문헌 (28)
- ASTM, "Standard test methods for laboratory determination of water (moisture) content of soil and rock by mass", ~ (2005)
- ASTM, "Standard test method for particle-size analysis of soils", ~ (2007)
- Bahrami M, "Discrete element modelling of stress propagation in soil under a rigid wheel in a soil bin։ A simulation of probe inducing stress deviation and wheel speed", Biosystems Engineering, 230, pp.159~170 (2023)
- Bowles JE, "Foundation analysis and design" (1988), The McGraw-Hill Companies, Inc
- Burns SJ, "Critical time step for DEM simulations of dynamic systems using a Hertzian contact model", International J. for Numerical Methods in Engineering, 119(5), pp.432~451 (2019)
- Chen Z, "Research on the disturbance behaviour of the track chassis to the sand-gravel pavement during the steering process of the electric shovel based on DEM", Advanced Powder Technology, 33(9), pp.103731~ (2022)
- Chen Z, "Simulation and optimization of the tracked chassis performance of electric shovel based on DEM-MBD", Powder Technology, 390, pp.428~441 (2021)
- Cheng J, "Analysis of adhesion between wet clay soil and rotary tillage part in paddy field based on discrete element method", Processes, 9(5), pp.845~ (2021)
- Du J, "Investigation of the burial and mixing performance of a rotary tiller using discrete element method", Soil and Tillage Research, 220, pp.105349~ (2022)
- Hoseinian SH, "Development of a dual sideway-share subsurface tillage implement : Part 1", Modeling tool interaction with soil using DEM. Soil and Tillage Research, 215, pp.105201~ (2022)
- Jiang M, "Granular soils : From DEM simulation to constitutive modeling", Acta Geotechnica, 15, pp.1723~1744 (2020)
- Kim JT, "Optimization of grouser shape ratio for coastal terrain driving device using discrete element method", J. of Terramechanics, 110, pp.27~37 (2023)
- Kim JT, "Development and performance evaluation of a bevameter for measuring soil strength", Sensors, 21(4), pp.1541~ (2021)
- Kim YS, "Development of DEM-MBD coupling model for draft force prediction of agricultural tractor with plowing depth", Computers and Electronics in Agriculture, 202, pp.107405~ (2022)
- Li B, "Modeling of soil-claw interaction using the discrete element method(DEM)", Soil and Tillage Research, 158, pp.177~185 (2016)
- Li H, "Analysis of soil compaction and tire mobility with finite element method", Proceedings of the Institution of Mechanical Engineers. Part K: J. of Multi-body Dynamics, 227(3), pp.275~291 (2013)
- Mudarisov S, "Justification of the soil dem-model parameters for predicting the plow body resistance forces during plowing", J. of Terramechanics, 109, pp.37~44 (2023)
- Nishiyama K, "2D FE–DEM analysis of contact stress and tractive performance of a tire driven on dry sand", J. of Terramechanics, 74, pp.25~33 (2017)
- Plackett RL, "The design of optimum multifactorial experiments", Biometrika, 33(4), pp.305~325 (1946)
- Rubinstein D, "Use of explicit finite-element formulation to predict the rolling radius and slip of an agricultural tire during travel over loose soil", J. of Terramechanics, 80, pp.1~9 (2018)
- Shigley JE, "Mechanical engineering design" (1985), McGraw-Hill
- Smith W, "Modeling of wheel-soil interaction over rough terrain using the discrete element method", J. of Terramechanics, 50(5-6), pp.277~287 (2013)
- Tekeste MZ, "Modeling soil-bulldozer blade interaction using the discrete element method(DEM)", J. of Terramechanics, 88, pp.41~52 (2020)
- Ucgul M, "Three-dimensional discrete element modelling of tillage : Determination of a suitable contact model and parameters for a cohesionless soil", Biosystems Engineering, 121, pp.105~117 (2014)
- Yamashita H, "Physics-based deformable tire–soil interaction model for off-road mobility simulation and experimental validation", J. of Computational and Nonlinear Dynamics, 13(2), pp.021002~ (2018)
- Yang P, "DEM-FEM simulation of tire-sand interaction based on improved contact model", Computational Particle Mechanics, 7, pp.629~643 (2020)
- Yokoyama A, "Effect of open spaces between grousers on the gross traction of a track shoe for lightweight vehicles analyzed using 2D DEM", J. of Terramechanics, 90, pp.31~40 (2020)
- Zhang S, "Discrete element modeling and shear properties of the maize stubble-soil complex", Computers and Electronics in Agriculture, 204, pp.107519~ (2023)