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논문 기본 정보

자료유형
학술저널
저자정보
배보민 (Pusan National University) 정대위 (Pusan National University) 류동형 (Pusan National University) 안장현 (Pusan National University) 최세오 (Pusan National University) 김연수 (Pusan National University) 김용주 (Chungnam National University)
저널정보
유공압건설기계학회 드라이브·컨트롤 드라이브·컨트롤 Vol.20 No.4
발행연도
2023.12
수록면
71 - 79 (9page)

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In the field of agricultural machinery, various on-field tests are conducted to measure design load for optimal design of agricultural equipment. However, field test procedures are costly and time-consuming, and there are many constraints on field soil conditions due to weather, so research on utilizing simulation to overcome these shortcomings is needed. Therefore, this study aimed to model agricultural soils using discrete element method (DEM) software. To simulate draft force, predictions are made according to travel speed and compared to field test results to validate the prediction accuracy. The measured soil properties are used for DEM modeling. In this study, the soil property measurement procedure was designed to measure the physical and mechanical properties. DEM soil model calibration was performed using a virtual vane shear test instead of the repose angle test. The DEM simulation results showed that the prediction accuracy of the draft force was within 4.8% (2.16~6.71%) when compared to the draft force measured by the field test. In addition, it was confirmed that the result was up to 72.51% more accurate than those obtained through theoretical methods for predicting draft force. This study provides useful information for the DEM soil modeling process that considers the working speed from the perspective of agricultural machinery research and it is expected to be utilized in agricultural machinery design research.

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Abstract
1. 서론
2. 재료 및 방법
3. 결과 및 고찰
4. 결론
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