Simulation and Experiment of Compression Molding Behavior of Substate Block Suitable for Mechanical Transplanting Based on Discrete Element Method (DEM)

Article Engineering, Chemical

Parameter calibration of coconut bran substrate simulation model based on discrete element and response surface methodology

Liang Zhao et al.

Summary: The physical and simulation experiments were combined to calibrate the parameters of coconut bran discrete element simulation, leading to an optimal combination of parameters. The calibrated parameters can provide references for the selection of coconut bran discrete element simulation parameters and the design and optimization of related equipment.

POWDER TECHNOLOGY (2022)

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Article Agriculture, Multidisciplinary

Edge recognition and reduced transplantation loss of leafy vegetable seedlings with Intel RealsSense D415 depth camera

Xin Jin et al.

Summary: This study focuses on the mechanization of seedling transplantation in protected horticulture. A low-loss transplantation robot for plug seedlings was developed based on machine vision, and a method of planning seedling path using seedling edge recognition technology and end effector of transplanting manipulator was proposed to reduce transplantation loss. Through orthogonal experiments and comparative experiments, the effectiveness and efficiency of the method were verified, providing a reference for reducing the injury rate of leafy vegetable seedlings transplantation.

COMPUTERS AND ELECTRONICS IN AGRICULTURE (2022)

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Article Mining & Mineral Processing

Coupled GIMP and CPDI material point method in modelling blast-induced three-dimensional rock fracture

Duanying Wan et al.

Summary: Three-dimensional rock fracture induced by blasting is a complex problem in geotechnical engineering. The material point method, combined with GIMP and CPDI, is used to address this problem and achieve good simulation and experimental results. The mechanism of rock fracture is analyzed, highlighting the importance of rock particle size and material parameters in rock damage.

INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY (2022)

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Article Agricultural Engineering

Calibration of discrete element parameters and experimental verification for modelling subsurface soils

Zhengyang Wu et al.

Summary: By calibrating DEM parameters and calculating the mapping relationship, the method developed can effectively predict the depth of sweep cultivation and the stress-strain behavior of the soil.

BIOSYSTEMS ENGINEERING (2021)

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Article Engineering, Chemical

Parameter calibration of discrete element method modelling for cohesive and non-spherical particles of powder

Chiho Hoshishima et al.

Summary: A calibration procedure for non-spherical cohesive particles using the DEM method is proposed in this paper, where the rolling friction coefficient and surface energy for cohesive force are calibrated based on the JKR theory. The validity of the calibrated parameters is confirmed through comparison with experimental data and mixing simulations in a V-shaped mixer, indicating their wide applicability.

POWDER TECHNOLOGY (2021)

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Article Engineering, Multidisciplinary