Discrete element method simulation of disc type furrow openers in paddy soil
作者机构：School of Agricultural Equipment EngineeringJiangsu UniversityZhenjiang 212013JiangsuChina College of EngineeringNanjing Agricultural UniversityNanjing 210031China Department of Agricultural EngineeringBahauddin Zakariya University 60800MultanPakistan Department of Farm Power and MachinerySindh Agricultural UniversityTandojam 70060Pakistan Department of Soil ScienceBahauddin Zakariya University 60800MultanPakistan Department of Irrigation and DrainageUniversity of AgricultureFaisalabad 38000Pakistan
出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)
年 卷 期：2020年第13卷第4期
页 面：103-110页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
基 金：The authors are grateful for the support of the Key Research and Development Project(2016YFD0200708) the Key Research and Development Project(Modern Agriculture)of Jiangsu Province,China(BE2017354) National Science and Technology Support Program(2018BAD08B04)
主 题：soil tillage discrete element method discrete element modeling furrow opener paddy soil
摘 要：For granular materials,discrete element modeling is one of the best computer tools to simulate their behavior and interactions.A field experiment was carried out to evaluate the performance of disc furrow openers in paddy *** element simulation was done to develop a 3D DEM model for notched,toothed and double disc furrow openers using EDEM *** Mindlin contact model with bonding was applied for simulation to fulfill the obligations of the soil moisture and bonding between the cohesive *** and field experimental data were compared to determine the applicability in the different working *** results of the simulation validated the applicability of the Hertz-Mindlin contact model with bonding to simulate the no till paddy soil using an extremely narrow tillage *** calibrated value of normal and shear stiffness was 5×10^(7)N/m,and the calibrated value of bond normal and shear strength was 3×10^(7)*** relative error(-1.7%to 20.6%)for the double disc furrow opener was lower as compared with that notch typed(29.2%to 44.4%)and toothed type(31.5%to 45.9%)furrow openers.
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