Construction of the particle simulation model for ginger-soil system using discrete element method  

作　　者：Wenlong Wang Pengcheng Zhang Xin Wang Xiaojun Meng Fangyan Wang 

机构地区：[1]College of Mechanical and Electrical Engineering,Qingdao Agricultural University,Qingdao 266109,Shandong,China [2]Collaborative Innovation Center for Shandong’s Main Crop Production Equipment and Mechanization,Qingdao 266109,Shandong,China [3]College of Civil Engineering&Architecture,Qingdao Agricultural University,Qingdao 266109,Shandong,China

出　　处：《International Journal of Agricultural and Biological Engineering》2024年第5期58-64,共7页国际农业与生物工程学报（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant No.52275258);the Taishan Scholar Youth Expert Project(Grant No.tsqn202306243);the Open Fund of Collaborative Innovation Center for Shandong’s Main Crop Production Equipment and Mechanization(Grant No.SDXTZX-10).

摘　　要：In order to systematically obtain the excavation characteristic parameters for ginger harvesting, experimental analysis was conducted on the discrete elemental parameters in a particle simulation model of the ginger-soil system. Through stacking tests, the surface energy of soil-ginger tuber JKR was determined to be 3.7 J/m2, the coefficient of static friction of soil-steel (65 Mn) was 0.56, the coefficient of rolling friction was 0.03, and the coefficient of restitution of collision was 0.40. Utilizing normal and lateral compression tests conducted on the soil body, the soil base parameters required for the Bonding model were determined. Subsequently, a three-dimensional model of ginger root and stem was constructed using these parameters. With the aid of 3D scanning technology, a discrete element parameter model was established for the ginger field during the harvesting period. On the basis of the measured parameters, a three-dimensional model of ginger rhizome was established and finally a discrete parameter model of ginger field was constructed in the harvesting period. The calibration parameters are highly reliable after the model’s tightness and field harvesting test, which provides reliable data support for the soil flow and the force of the soil-touching parts during the later simulation of ginger harvesting and digging operation.

关 键 词：GINGER SOIL discrete element simulation parameters CALIBRATION 

分 类 号：S633[农业科学—蔬菜学]