A Discrete Element Model for Characterizing Soil-Cotton Seeding Equipment Interactions Using the JKR and Bonding Contact Models

Xuyang Ran, Long Wang (), Jianfei Xing, Lu Shi, Dewei Wang, Wensong Guo and Xufeng Wang
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Xuyang Ran: College of Mechanical and Electrical Engineering, Tarim University, Alar 843300, China
Long Wang: College of Mechanical and Electrical Engineering, Tarim University, Alar 843300, China
Jianfei Xing: College of Mechanical and Electrical Engineering, Tarim University, Alar 843300, China
Lu Shi: College of Mechanical and Electrical Engineering, Tarim University, Alar 843300, China
Dewei Wang: College of Mechanical and Electrical Engineering, Tarim University, Alar 843300, China
Wensong Guo: College of Mechanical and Electrical Engineering, Tarim University, Alar 843300, China
Xufeng Wang: College of Mechanical and Electrical Engineering, Tarim University, Alar 843300, China

Agriculture, 2025, vol. 15, issue 15, 1-16

Abstract: Due to the increasing demand for agricultural water, the water availability for winter and spring irrigation of cotton fields has decreased. Consequently, dry seeding followed by irrigation (DSSI) has become a widespread cotton cultivation technique in Xinjiang. This study focused on the interaction between soil particles and cotton seeding equipment under DSSI in Xinjiang. The discrete element method (DEM) simulation framework was employed to compare the performance of the Johnson-Kendall-Roberts (JKR) model and Bonding model in simulating contact between soil particles. The models’ ability to simulate the angle of repose was investigated, and shear tests were conducted. The simulation results showed that both models had comparable repose angles, with relative errors of 0.59% for the JKR model and 0.36% for the contact model. However, the contact model demonstrated superior predictive accuracy in simulating direct shear test results, predicting an internal friction angle of 35.8°, with a relative error of 5.8% compared to experimental measurements. In contrast, the JKR model exhibited a larger error. The Bonding model provides a more accurate description of soil particle contact. Subsoiler penetration tests showed that the maximum penetration force was 467.2 N, closely matching the simulation result of 485.3 N, which validates the reliability of the model parameters. The proposed soil simulation framework and calibrated parameters accurately represented soil mechanical properties, providing a robust basis for discrete element modeling and structural optimization of soil-tool interactions in cotton field tillage machinery.

Keywords: discrete element method; soil; bonding model; JKR model; direct shear test (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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