Measurement and Calibration of DEM Parameters of Soybean Seed Particles

Yan, Dongxu; Yu, Jihong; Wang, Yan; Zhou, Long; Tian, Ye; Zhang, Na

doi:10.3390/agriculture12111825

Cited by 5 publications

(4 citation statements)

References 25 publications

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“…Due to the high sphericity of soybean seeds [18] and their good rollability and mobility, a shaftless spiral seed discharging and delivery device was designed based on the principle of spiral conveying. Using its rotational pushing principle and the flexibility of the shaftless spiral, the seed discharging and the restrained seed guiding of soybean seeds were realized, and the structure schematic is shown in Figure 3.…”

Section: Design Of Key Components 221 Structure and Parameter Design ...mentioning

confidence: 99%

Design and Experiment of a Soybean Shaftless Spiral Seed Discharge and Seed Delivery Device

Zhu

Wang

Bai

et al. 2023

Preprint

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In response to the problem of poor flatness caused by straw and root stubble on the no-till surface during the operation of the driven stubble-breaking and anti-blocking no-till planter, poor performance of seed discharge by the seed rower and seed guide operation by the seed guide tube and the overall vibration of the tool during the stubble-breaking and anti-blocking operation in the southwest, a soybean shaftless spiral seed discharge and seed delivery device was designed based on the principle of screw conveying. The optimum seed filling size and speed range of the spiral blade was obtained by analyzing size, force and motion of soybean seeds of "ZhongHuang 37". The quadratic regression orthogonal rotation test and response surface method were used to analyze the operating parameters of the shaftless spiral seed discharge and seed delivery device by joint EDEM(Discrete Element Method)-RecurDyn simulation. The optimum parameters were obtained: the spacing of spiral was 11.4 mm, spiral outer radius was 5.5 mm, spiral inner radius was 2.9 mm and rotation speed was 10.4 r·s− 1. Based on simulation and optimization results, the device was trialed and its field performance was tested. The results show that the average seeding qualification index, reseeding index, missing index and damage index of the shaftless spiral seed discharge and delivery device were 92.6%, 5.03%, 2.4% and 0.92%, respectively, at an average surface level of 8.9 cm, which met the local agronomic requirements. The designed soybean shaftless spiral seed discharge and seed delivery device meets the requirements of the quality of no-till seeding and can provide reference for the design and improvement of seed discharger and seed guide tube under poor ground leveling and long-distance seed delivery conditions.

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Section: Design Of Key Components 221 Structure and Parameter Design ...mentioning

confidence: 99%

Design and Experiment of a Soybean Shaftless Spiral Seed Discharge and Seed Delivery Device

Zhu

Wang

Bai

et al. 2023

Preprint

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“…Currently, the soybean particle model derived from MS has been applied in numerous studies on the calibration of soybean contact parameters [17][18][19][20][21][22][23]. Despite the results of the proceeding investigations are incompatible with the contact properties of the soybeanbonded particle model, the calibration process and experimental setup are highly bene cial and instructive for this study.…”

Section: Introductionmentioning

confidence: 99%

Calibration of the contact parameters for soybean-bonded particle model based on DEM

Han,

Wang,

Tang

et al. 2024

Preprint

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To retrieve the simulation contact parameters of the soybean-bonded particle for an effective gas-solid two-phase flow coupling simulation analysis of the working procedure of the pneumatic seed-metering device, the angle of repose (AoR) and angle of stacking (AoS) from the physical seed-piling test were captured as the evaluation indexes. The Plackett-Burman test and the steepest ascent test were ratified to simplify the simulation analysis of the soybean-bonded particles, screening out the crucial influenced factors and centroids. The Box-Behnken response surface test was then implemented to identify the desired saliency factor values, and the universality of the calibrated contact parameters for soybean-bonded particles synthesized with varying fraction particle sizes was eventually confirmed. The results revealed that the effect of the static friction coefficient of soybean-plexiglass (µp−g) on AoR was exceedingly significant, and that of the static and rolling friction coefficients of soybean-soybean (µp−p & Cp−p) was generally prominent. While it was abundantly clear that both µp−p and Cp−p supremely affected AoS. The optimal values determined by the Box-Behnken response surface test yielded ideal values of 0.0678 for µp−p, 0.2453 for µp−g, and 0.0079 for Cp−p, culminating in an AoR of 28.32° and AoS of 28.76°, respectively. Based on the derived optimal simulation contact parameters, the maximal error between the simulated and measured values of AoR and AoS of soybean-bonded particles constructed with various fraction particle sizes was estimated to be 1.59%, implying that the calibrated contact parameters have a superior generality. The insights of this investigation can be effectively applied to the coupled simulation analysis of the pneumatic soybean seed-metering device’s operations, as well as a reference for other researchers to erect particle models for DEM simulation using the bonded particle method.

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“…Zhou H. et al, (2022), determined the DEM parameters of paddy soil with high moisture content (>40%) by using the Hertz-Mindlin with JKR model. Yan D. et al, (2022), measured and calibrated the RFCP-P and RFCP-B of soybean seed particles of three varieties with different sphericity. The above studies have calibrated the key DEM parameters of the particles, which improved the accuracy of related simulation studies, but there is no related study reported on green onion seeds and similar seeds.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Physical Property Parameters and Simulative Calibration of Dem Parameters for Green Onion Seeds

TAO,

MO,

et al. 2023

INMATEH

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The contact parameters setting determines the accuracy of discrete element method (DEM) simulation analysis, while there is a lack of research on contact parameters of green onion seed. In this paper, the physical parameters of green onion seeds were measured by experiment, and the DEM parameters were calibrated by simulation. Based on EDEM software, the Hertz-Mindlin no-slip model was used to create the particle model of green onion seeds that takes on the shape of peltate with the irregular surface, and the repose angle was measured by the measurement method of lifted cylinder. Plackett-Burman test was designed to screen the significance of parameters, and the optimal range of significance parameters was further determined through the steepest climbing test. Then the regression model of seeds repose angle was obtained by Box-Behnken test and the optimal parameter combination was calculated: the static friction factor between seeds was 0.424, the rolling friction factor was 0.085, the static friction factor between seeds and steel was 0.310. The optimized repose angle in the simulation had an overall relative error of 0.54%, indicating that the contact parameters of the calibrated green onion seed had high accuracy.

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Measurement and Calibration of DEM Parameters of Soybean Seed Particles

Cited by 5 publications

References 25 publications

Design and Experiment of a Soybean Shaftless Spiral Seed Discharge and Seed Delivery Device

Design and Experiment of a Soybean Shaftless Spiral Seed Discharge and Seed Delivery Device

Calibration of the contact parameters for soybean-bonded particle model based on DEM

Measurement of Physical Property Parameters and Simulative Calibration of Dem Parameters for Green Onion Seeds

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