Open AccessEffect of soil particle-size distribution (PSD) on soil-subsoiler interactions in the discrete element model
Author(s) -
Xuezhen Wang,
Wuquan Wei,
Jinpu He,
Yuxiang Huang
Publication year - 2021
Publication title -
spanish journal of agricultural research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.337
H-Index - 36
eISSN - 2171-9292
pISSN - 1695-971X
DOI - 10.5424/sjar/2021191-16584
Subject(s) - bin , discrete element method , tillage , soil science , particle size distribution , soil gradation , bulk density , particle (ecology) , environmental science , mathematics , particle size , geotechnical engineering , soil water , geology , mechanics , physics , agronomy , paleontology , oceanography , algorithm , biology
Particle-size distribution (PSD) is a key parameter affecting soil dynamic attributes and cutting forces of tillage tools in the discrete element model in accordance with our preliminary simulations. To accurately determine PSD, significance and mechanism for the effect of PSD under different nominal radii were investigated using the discrete element method (DEM) and validated using the laboratory soil-bin results. Soil disturbance characteristics (soil rupture distance ratio, height of accumulated soil, soil density change rate) and cutting forces (draft and vertical) under different treatments were predicted and measured respectively. The ANOVA outputs showed that PSD significantly affected draft and vertical forces (p