Experimental Research on the Core Ploughshare Furrow Opener Based on the Discrete Element Method

Shiqiang, Pan; Zifu, Cao; Jiang, Shang-shang; Yu, Jun

doi:10.2991/icmce-14.2014.151

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…On the contrary, as the spacing between wing plates decreases, the depth o reflux increases. According to the agronomic requirements of the horizontal transplan of sweet potatoes, either too deep or too shallow soil depth is not conducive to the gro and development of sweet potato seedlings [40]. It can be obtained from Equation (1) that when the depth of the trench is a fixed value, and as the spacing between the wing plates increases, the soil reflux depth becomes shallower.…”

Section: Analysis Of the Effect Of Soil Reflux On The Morphology Of B...mentioning

confidence: 99%

“…On the contrary, as the spacing between wing plates decreases, the depth of soil reflux increases. According to the agronomic requirements of the horizontal transplanting of sweet potatoes, either too deep or too shallow soil depth is not conducive to the growth and development of sweet potato seedlings [40].…”

Section: Analysis Of the Effect Of Soil Reflux On The Morphology Of B...mentioning

confidence: 99%

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Optimized Design and Experiment of a Self-Covering Furrow Opener for an Automatic Sweet Potato Seedling Transplanting Machine

Wu,

Wang,

Zhang

et al. 2023

Sustainability

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The yield and quality of sweet potatoes are significantly influenced by the transplantation posture of sweet potato seedlings. The performance of the sweet potato seedling transplanting opener directly affects the transplantation posture of sweet potato seedlings. In order to improve the yield and quality of sweet potatoes, this study proposes a joint simulation method based on discrete element and flexible multi body dynamics (DEM-FMBD), which optimizes the structure of a self-covering soil opener. By exploring the influence of self-covering soil trenchers on the planting depth and posture of sweet potato seedlings during horizontal transplantation, it was determined that the influencing factors of the experiment were wing spacing, soil reflux height, and soil reflux length. Based on the DEM-FMBD coupling simulation platform, single factor, and quadratic rotation orthogonal experiments were carried out. According to the results of the simulation test, the effect of the interaction of test factors on planting depth and planting attitude was analyzed by the response surface method. Finally, the optimal structural parameter combination was obtained by a multi-objective optimization method: the spacing of the wings was 58 mm, the height of the soil backflow port was 71 mm, and the length of the soil backflow port was 163 mm; thus, the quality of transplanting is improved effectively. This study provides the method and theory reference for the study of sweet potato transplanting.

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Section: Analysis Of the Effect Of Soil Reflux On The Morphology Of B...mentioning

confidence: 99%

Section: Analysis Of the Effect Of Soil Reflux On The Morphology Of B...mentioning

confidence: 99%

Optimized Design and Experiment of a Self-Covering Furrow Opener for an Automatic Sweet Potato Seedling Transplanting Machine

Wu,

Wang,

Zhang

et al. 2023

Sustainability

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“…The spherical particles with a radius of 4 mm were chosen to construct the soil model, and the particle contact model was the Hertz-Mindlin with bonding model. The model can be used to measure the soil's water content using the bonding radius and by modifying the bonding bonds' parameters to simulate the various soil properties [34], soil-related parameter references [31,[33][34][35][36][37][38][39][40], and the precise simulation parameter settings, as shown in Table 1. Create a bed of particles to quickly generate the soil bin.…”

Section: Model Of Soilmentioning

confidence: 99%

Design and Test of Single-Disc Opener for No-Till Planter Based on Support Cutting

Zhong,

Li,

et al. 2023

Agriculture

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To solve the problem of low straw-cutting efficiency of single-disc openers of no-till planters under conditions of high soil moisture content, a single-disc furrowing and straw-cutting device was designed based on the support-cutting principle. To improve the straw-cutting ability of the disc opener when it operates under high-moisture-content soil conditions and to make sure that the straw that is not cut by the disc coulter can be cut smoothly by the disc opener, the support shovel was designed, and the operation mechanism of the support shovel device was analyzed. The soil moisture content, the support shovel’s entry angle, the support shovel’s entry gap angle, and the support shovel’s tip margin were identified as the factors influencing the device design through the theoretical analysis of the furrowing and straw-cutting device. Through the discrete element method (DEM), a single-factor simulation test was first conducted to analyze how different soil moisture contents affected the device’s ability to cut straw, and the results showed that the number of broken bonds was lowest when the soil moisture content was 20 ± 1%, and the time taken for the straw to be wholly cut off was also the longest. Then, a quadratic orthogonal simulation test was conducted to construct a regression model and optimize the parameters at the soil moisture content of 20 ± 1%, and the results revealed that the significant order of each factor’s influence on the number of broken bonds is as follows: entry gap angle, entry angle, and shovel tip margin. In addition, the device’s overall operation quality was better when the entry angle was 49°, the entry gap angle was 0°, and the shovel tip margin was 10 mm. At this time, the number of broken bonds was predicted to be 506. Finally, the simulation validation test was run, and the number of broken bonds was obtained to be 478, with a relative error of 5.6% from the predicted value. According to the optimal parameters to complete the device trial production and field test, the results show that the average cut-off rate of the device is 71.7%, the stability coefficient of the furrowing depth is 90.87%, and the performance of the furrow opening is excellent, which meets the requirements of a no-tillage seeding operation. This study can provide a reference for the design and improvement of no-tillage seeding machines under conditions of high soil moisture content.

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“…Kang et al [12] probed into the influence of changes in soil physical properties and working parameters on the working efficiency of disc trenchers based on the current situation of orchard planting; in addition, they obtained the variation law of the power consumption during soil cutting with trenching bent cutters using the LS-DYNA power module in ANSYS software. Pan et al [13] took the opener and soil as the research object, based on this soil particle discrete element simulation model, optimized the structure parameters of the core-escape opener, and obtained the optimal parameter combination of the core-bell opener. Tian et al [14] established the interaction model between the soil-covering disc and the soil by using the discrete element method, and determined the relationship between the resistance of the soil-covering disc in the forward direction, the mass flow rate and the working parameters through simulation experiments.…”

Section: Introduction mentioning

confidence: 99%

Operation power consumption and verification tests of a trenching device for orchards in Xinjiang based on discrete element

Kan

et al. 2021

International Journal of Agricultural and Biological Engineering

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According to the agronomic requirements of orchard planting pattern and fertilization in Xinjiang, the soil particle models and a soil-trenching device interaction model were established by using discrete element simulation software in order to find out the law of influence of structure parameters and working parameters on the operation power consumption of a segmented cutting trenching device; moreover, its cutting process was simulated according to the response surface test design. According to the results of research on the influence of forward speed, cutter disk speed and cutter disk combination on the operation power consumption of the segmented cutting trenching device, the law of their influence on the operation power consumption in descending order is forward speed, cutter disk combination, cutter disk speed. According to the response surface test result, the following influential factor parameter combination has been obtained: forward speed 815 m/h, cutter disk speed 112 r/min, cutter disk combination A (cut angle 150°, bent angle 60° and working width 133 mm), cutter disk combination B (cut angle 180°, bent angle 90° and working width 166 mm), and trenching operation power consumption-optimization results were verified through field tests. According to the verification, the results showed a high accuracy of the simulation, with a relative error mean of 3.18% between the theoretical value and the field test value. This study can provide a reference for the energy-saving design of orchard trenching devices.

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Experimental Research on the Core Ploughshare Furrow Opener Based on the Discrete Element Method

Cited by 3 publications

References 7 publications

Optimized Design and Experiment of a Self-Covering Furrow Opener for an Automatic Sweet Potato Seedling Transplanting Machine

Optimized Design and Experiment of a Self-Covering Furrow Opener for an Automatic Sweet Potato Seedling Transplanting Machine

Design and Test of Single-Disc Opener for No-Till Planter Based on Support Cutting

Operation power consumption and verification tests of a trenching device for orchards in Xinjiang based on discrete element

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