A nonlinear 3D finite element analysis of the soil forces acting on a disk plow

摘要: Abstract This study aimed to compare predicted soil forces on a disk plow with measured within the tillage depth of clay (90 g kg−1 sand, 210 g kg−1 silt, 700 g kg−1 clay) and sandy loam (770 g kg−1 40 g kg−1 190 g kg−1 soils. The model assumed effects both tilt angle plowing speed. Two speeds (4 10 km/h) at three angles (15°, 20° 25°) were compared draft, vertical, side determined. A 3D nonlinear finite element was used predict while dynamometer measure them in field. An incremental method deal material nonlinearity Trapezoidal rule analyze dynamic response during tillage. Field experiments conducted verify results model. It found that increasing increased draft vertical decreased force. Increasing speed Generally, from be compatible experimental soil, differences between data probably due problems measuring mechanical characteristics triaxial test.