Analysis of effects of operating speed and depth on bentleg opener performance in cohesive soil using the discrete element method
Article
Article Title | Analysis of effects of operating speed and depth on bentleg opener performance in cohesive soil using the discrete element method |
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ERA Journal ID | 41630 |
Article Category | Article |
Authors | Aikins, Kojo Atta (Author), Antille, Diogenes L. (Author), Ucgul, Mustafa (Author), Barr, James B. (Author), Jensen, Troy A. (Author) and Desbiolles, Jack M. A. (Author) |
Journal Title | Computers and Electronics in Agriculture |
Journal Citation | 187 |
Article Number | 106236 |
Number of Pages | 13 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | Amsterdam, Netherlands |
ISSN | 0168-1699 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compag.2021.106236 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0168169921002532?via%3Dihub |
Abstract | High operating speeds are desirable, different seeding depths are required, and low soil disturbance is necessary for sowing in no-tillage farming. The effects of operating speed (8–16 km h−1) and depth (60–120 mm) on bentleg opener (four variations) performance were analysed in comparison to straight openers in a virtual soil bin using the discrete element method (DEM). Generally, increasing operating depth and speed resulted in increased soil disturbance and reaction forces. However, the bentleg openers loosened furrows down to the furrow bottom and caused less lateral soil throw at all operating depths and speeds. Bentleg openers, particularly without foot, increased furrow width by lower magnitudes compared with straight openers as operating speed was increased. The greatest lateral soil throw beyond furrow banks recorded for the bentleg openers at operating speed and depth of 16 km h−1 and 60 mm were less than the least for the straight openers, except for the footless bentleg with forward raked side leg. Backward raked side leg had the lowest impact on lateral soil throw and spill over distance with increasing operating speed. Increasing operating speed shifted the main ridge created by the bentleg openers above the furrow’s centre outward to the left. Furrow backfill of 97–100% was achieved with the bentleg openers. Bentleg openers with 45° foot rake angle required the lowest draught and vertical forces. Backward raked side leg resulted in the highest draught force among the bentleg openers and the greatest vertical (penetration) force among all the openers |
Keywords | high speed no-tillage sowing, narrow point openers, soil disturbance, soil reaction forces, vertosol |
ANZSRC Field of Research 2020 | 409901. Agricultural engineering |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre for Agricultural Engineering |
University of South Australia | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6972/analysis-of-effects-of-operating-speed-and-depth-on-bentleg-opener-performance-in-cohesive-soil-using-the-discrete-element-method
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