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tillage force and disturbance characteristics of different geometric-shaped subsoilers via DEM

Advances in Manufacturing 2020年第3期8卷 392-404页

作者： Jin Tong Xiao-Hu Jiang Yue-Ming Wang Yun-Hai Ma Jun-Wei Li Ji-Yu Sun Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchun130022People’s Republic of China College of Biology and Agricultural Engineering Jilin UniversityChangchun130022People’s Republic of China College of Mechanical and Electrical Engineering Shihezi UniversityShihezi832000XinjiangPeople’s Republic of China

With the increased use of agricultural machinery in field operations,soil compaction has become increasingly severe,and the plough pan has become *** is an excellent way to address this ***,it is limited by high energy consumption,which is closely related to tillage *** investigate the effect of the geometric shape of shanks and tines on tillage force and soil disturbance in loam,a layered soil model in accordance with the actual conditions was established and five different subsoilers were simulated via discrete element *** results indicated that the shank impacted soil disturbance and tine impacted tillage *** draft force of curved shank and chisel tine was 8%less than that of the straight shank and sweep *** straight shank and sweep tine produced a larger furrow profile and a higher furrow *** subsoiler with curved shank and chisel tine(C-C)exhibited the lowest specific resistance(12.87,17.52,19.46 and 21.18 kN/m^2 in the 30,35,40 and 45 cm tillage depth,respectively)considering the draft force and soil disturbance ***,these results will facilitate in the selection of a suitable subsoiler and design of new subsoilers with lower energy consumption requirements for loam areas worldwide.

关键词： Subsoiler Discrete element method(DEM) tillage force Soil disturbance Soil compaction

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