Using the Discrete Element Method to Analyze  and Calibrate a Model for the Interaction  Between a Planting Device and Soil Particles

Zeng, Fandi; Li, Xuying; Zhang, Yongzhi; Zhao, Zhiwei; Cheng, Cheng

doi:10.35633/inmateh-63-42

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…The parameters were adjusted several times, and the optimal results are shown in Table 2. To improve the accuracy of the simulation and ensure the efficiency of the calculation, soil particles were set as spherical particles with a filling radius of 3 mm, and the basic parameters were determined according to the literature [32,33]. As shown in Figure 5, a simulation model of the soil and compactness meters is established, and the dropping speed of the compactness meter is set to 50 mm/s.…”

Section: Establishment Of the Soil Modelmentioning

confidence: 99%

Experimental Research and Analysis of Soil Disturbance Behavior during the Hole Drilling Process of a Hanging-Cup Transplanter by DEM

Zeng

Bai

et al. 2023

Processes

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This study provides a basis for designing and optimizing the key components of hanging-cup transplanters. The discrete element method, a high-speed photography test, and indoor soil bin tests were used to explore soil disturbance behavior during the hole drilling process. A comparative analysis of the discrete element method and the high-speed photography test indicated that soil particles are mainly affected by the coupled effects of the shear force and the squeezing force of the planter. The soil disturbance range in the horizontal and longitudinal sections gradually increases with the movement of the planter. The change in the soil particle velocity of the horizontal and longitudinal sections in different zones shows a trend of first increasing, then decreasing, and finally stabilizing. The velocity of soil particles in the longitudinal section varies significantly in the direction of burial. The soil in the horizontal section mainly moves to both sides when the duckbill is opened. The closer the soil particles are to the outer wall of the duckbill, the greater the change in velocity is. The soil bin tests and simulations were carried out under different conditions, but the change trend of the simulation results is consistent with the soil bin test results, proving that the simulation model is reliable. With the forward speed of the transplanter, planting depth, and soil compactness as the test factors, and the hole depth and hole longitudinal length as the response values, an orthogonal test of three factors and three levels was designed. A regression model between each element and response value was established. The optimal parameter combination was obtained when the forward speed was 1.25 km/h, the planting depth was 80 mm, and the soil firmness was 140~150 (N/cm2); these results were experimentally verified.

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Section: Establishment Of the Soil Modelmentioning

confidence: 99%

Experimental Research and Analysis of Soil Disturbance Behavior during the Hole Drilling Process of a Hanging-Cup Transplanter by DEM

Zeng

Bai

et al. 2023

Processes

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“…In order to ensure that the simulated soil can accurately represent the actual soil conditions, the determination of relevant physical parameters and the calibration of simulation parameters have been completed for the sandy loam soil in Inner Mongolia (Zeng et al, 2021), as shown in Table 2. The simplification is carried out separately for the structural characteristics of sandy loam soils.…”

Section: Discrete Element Simulation Analysis Of Transplanting Processmentioning

confidence: 99%

Effect of Transplanter Vibration on Particle Movement Velocity of Sandy Loam Soil by Using Dem

SU,

LI,

ZENG

et al. 2023

INMATEH

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The sandy loam soil has complex movement characteristics during hole formation by hanging cup transplanters. In order to better investigate this point, the paper aims to investigate the disturbance pattern of transplanter vibration on sandy loam soil and the movement characteristics of soil particles by the discrete element method. The vibration characteristics of the transplanter operating on sandy loam soil were tested and analyzed, and the motion law of vibration parameters on sandy loam soil was investigated with the help of the discrete element method and soil bin test. The results showed that the vibration acceleration of the transplanter increased with the forward speed, the primary vibration frequency range was from 0 to 12 Hz, and the vibration amplitude increased linearly in the field of 1.21 to 9.19 mm. The Central Composite test resulted in the regression equations of vibration amplitude and vibration frequency on the average movement velocity of the particles. The response surface analysis showed that the effect of vibration amplitude on the average movement velocity of particles was greater than the effect of vibration frequency on the average movement velocity of particles. At the same time, the average movement velocity of the particles tends to increase significantly under the interaction of the two. This study provides data to support the design of planters for sandy loam soils, which is beneficial to promote seedling transplanting technology further.

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Review of Discrete Element Method Simulations of Soil Tillage and Furrow Opening

Aikins

Üçgül

Barr³

et al. 2023

Agriculture

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In agricultural machinery design and optimization, the discrete element method (DEM) has played a major role due to its ability to speed up the design and manufacturing process by reducing multiple prototyping, testing, and evaluation under experimental conditions. In the field of soil dynamics, DEM has been mainly applied in the design and optimization of soil-engaging tools, especially tillage tools and furrow openers. This numerical method is able to capture the dynamic and bulk behaviour of soils and soil–tool interactions. This review focused on the various aspects of the application of DEM in the simulation of tillage and furrow opening for tool design optimization. Different contact models, particle sizes and shapes, and calibration techniques for determining input parameters for tillage and furrow opening research have been reviewed. Discrete element method predictions of furrow profiles, disturbed soil surface profiles, soil failure, loosening, disturbance parameters, reaction forces, and the various types of soils modelled with DEM have also been highlighted. This pool of information consolidates existing working approaches used in prior studies and helps to identify knowledge gaps which, if addressed, will advance the current soil dynamics modelling capability.

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Using the Discrete Element Method to Analyze and Calibrate a Model for the Interaction Between a Planting Device and Soil Particles

Cited by 5 publications

References 14 publications

Experimental Research and Analysis of Soil Disturbance Behavior during the Hole Drilling Process of a Hanging-Cup Transplanter by DEM

Experimental Research and Analysis of Soil Disturbance Behavior during the Hole Drilling Process of a Hanging-Cup Transplanter by DEM

Effect of Transplanter Vibration on Particle Movement Velocity of Sandy Loam Soil by Using Dem

Review of Discrete Element Method Simulations of Soil Tillage and Furrow Opening

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