Simulation  of  Draft  Forces  of  a  Sweep  in  a  Loamy  Sand  Soil  Using  the  Discrete  Element  Method

Mak, Jay

doi:10.7451/cbe.2014.56.2.1

Cited by 21 publications

(7 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bulk density showed 1544–1800

, 1519–1898

, and 1899–2021

analysis results in sandy loam, loam, and clay loam fields, respectively. The bulk density results were generally higher than the range of 1200–1500

, which was the bulk density value reported in previous studies performed on soil bins [ 41 , 42 , 43 ] and showed similar values to the range of 1500–2100

reported in studies using actual field experiments [ 27 , 44 ]. Porosity was 0.47–0.53, 0.41–0.54, and 0.34–0.39 in sandy loam, loam, clay loam fields, respectively, and it was confirmed that as the soil layer deepened, it decreased up to 24.1% compared to the topsoil.…”

Section: Resultssupporting

confidence: 84%

Analysis of the Effect of Tillage Depth on the Working Performance of Tractor-Moldboard Plow System under Various Field Environments

Kim

Lee

Baek

et al. 2022

Sensors

View full text Add to dashboard Cite

The purpose of this study was to analyze the tillage depth effect on the tractor-moldboard plow systems in various soil environments and tillage depths using a field load measurement system. A field load measurement system can measure the engine load, draft force, travel speed, wheel axle load, and tillage depth in real-time. In addition, measurement tests of soil properties in the soil layer were preceded to analyze the effect of field environments. The presented results show that moldboard plow at the same tillage depth had a wide range of influences on the tractor’s working load and performance under various environments. As the draft force due to soil–tool interaction occurred in the range of 5.6–17.7 kN depending on the field environment, the overall mean engine torque and rear axle torque were up to 2.14 times and 1.67 times higher in hard and clayey soil, respectively, than in soft soil environments. In addition, the results showed tractive efficiency of 0.56–0.73 and were analyzed to have a lugging ability of 67.8% with a 44% maximum torque rise. The engine power requirement in hardpan was similar within 3.6–9.6%, but the power demand of the rear axle differed by up to 18.4%.

show abstract

“…Bulk density showed 1544–1800

, 1519–1898

, and 1899–2021

analysis results in sandy loam, loam, and clay loam fields, respectively. The bulk density results were generally higher than the range of 1200–1500

, which was the bulk density value reported in previous studies performed on soil bins [ 41 , 42 , 43 ] and showed similar values to the range of 1500–2100

Section: Resultssupporting

confidence: 84%

Analysis of the Effect of Tillage Depth on the Working Performance of Tractor-Moldboard Plow System under Various Field Environments

Kim

Lee

Baek

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…They noted that accelerating the movement of soil particles increased frictional forces on tines. Different studies have reported different results about draught force and forward speed [33][34][35]. Several factors have contributed to this difference, including field conditions and the type of tillage tool used in the studies.…”

Section: Effect Of Speed and Frequency On Draught Forcementioning

confidence: 99%

“…A similar trend was observed when the harvester was evaluated in sandy loam soil, as shown in Figure 12. However, the sandy loam soil's draught forces (i.e., measured and predicted DEM values) were relatively Different studies have reported different results about draught force and forward speed [33][34][35]. Several factors have contributed to this difference, including field conditions and the type of tillage tool used in the studies.…”

Section: Effect Of Speed and Frequency On Draught Forcementioning

confidence: 99%

“…The results showed that each 1 mm increase in amplitude decreased draught force by 463. 35 N and increased total torque and specific energy consumption by 35.03 N m and 4.3 kJ m −3 , respectively. However, a 1 Hz increase in vibration frequency increased specific energy consumption by 3.12 kJ m −3 , whereas draught force and total torque decreased by 375.75 N and 28.44 Nm, respectively.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Discrete Element Method Simulation and Field Evaluation of a Vibrating Root-Tuber Shovel in Cohesive and Frictional Soils

Awuah,

Aikins,

Antille

et al. 2023

Agriculture

View full text Add to dashboard Cite

Soil-cutting forces are key indicators of root-tuber harvesters and other soil-engaging tools’ performance. To improve operational efficiency, minimise soil disturbance, and reduce fuel consumption, the draught and vertical forces involved in root and tuber crop harvesting must be minimised. Two field experiments assessed the harvester’s performance at a depth of 200 mm, varying frequencies, and travel speeds on clay and sandy loam soils. Discrete element models (DEM) were developed and subsequently used to replicate the field experiments and evaluate S-shaped and fork-shaped shovels. Linear regression and ANOVA (p < 0.05) were used to analyse the data. Draught force concurrently increased with speed in both soil textures but decreased with vibration frequency. The draught force decreased by approximately 41% in clay soil and 21% in sandy loam soil when the harvester was operated between 5 Hz and 14.5 Hz and between 10 Hz and 12.5 Hz, respectively. DEM simulations had relative errors of 4% (clay) and 4.7% (sandy loam) for draught force and drawbar power compared to experimental data. The S-shaped shovel was more efficient at crushing and translocating soil–crop mass to the rear of the harvester than the fork-shaped shovel. These DEM soil–crop models are reliable for evaluating other root-tuber harvesting tools.

show abstract

“…Sandy loam soil was chosen due to its extensive use for growing crops and its availability across the Canadian prairies. In between each test run, the soil was tilled with a cultivator, levelled, and slightly compacted with a roller, as described by Mak and Chen [13].…”

Section: Description Of the Press-wheel Test Apparatus And Soil Binmentioning

confidence: 99%

Discrete Element Modelling of Soil Compaction of a Press-Wheel

Acquah

Chen

2021

AgriEngineering

Self Cite

View full text Add to dashboard Cite

Press-wheels are wheels designed to compact the soil above seeds in the “seed cover” region. Soil compaction, produced by the press-wheels of seeders, affects seedling emergence and early plant growth. The Discrete Element Method (DEM) was used to model the amount of soil compaction from a press-wheel with varying down forces. The model was used to predict sinkage and rolling resistance of the press-wheel. The model results were validated with data from soil bin tests of the press-wheel in a sandy loam soil under varying soil moisture content levels (low, medium, and high). The sinkage results from the soil bin tests were 27.7, 26.7, and 25.2 mm for the low, medium, and high soil moisture content levels, respectively. The corresponding rolling resistances obtained from the tests were 104.4, 89.9, and 113.6 N. The press-wheel model adequately predicted the sinkage and rolling resistance for each soil moisture content level with overall Relative Mean Errors (RME) ranging from 13 to 23%. Additional simulation results show that average peak soil stresses across the three soil moisture contents at a depth of 0.12 m were 22,466.7, 8700.0, and 6900.0 Pa for vertical, horizontal, and lateral directions, respectively. The results enhance the understanding of the dynamics of the soil–press-wheel interaction and provided useful information for seeder press-wheel design.

show abstract

Simulation of Draft Forces of a Sweep in a Loamy Sand Soil Using the Discrete Element Method

Cited by 21 publications

References 19 publications

Analysis of the Effect of Tillage Depth on the Working Performance of Tractor-Moldboard Plow System under Various Field Environments

Analysis of the Effect of Tillage Depth on the Working Performance of Tractor-Moldboard Plow System under Various Field Environments

Discrete Element Method Simulation and Field Evaluation of a Vibrating Root-Tuber Shovel in Cohesive and Frictional Soils

Discrete Element Modelling of Soil Compaction of a Press-Wheel

Contact Info

Product

Resources

About