Spanish Journal of Agricultural Research, ( ISI ), Volume (12), No (1), Year (2014-3) , Pages (44-51)

Title : ( The behavior of tillage tools with acute and obtuse lift angles )

Authors: M. Hossein Abbaspour Fard , seyed ali hoseini khan beh been , Mohammad Hossein Aghkhani , Ahmad Sharifi ,

Citation: BibTeX | EndNote

An experimental investigation was conducted to study the trend of draft force against forward speed and working depth for a range of lift angles beyond acute angles for a simple plane tillage tool. The experiments were performed in an indoor soil bin facility equipped with a tool carriage and a soil preparation unit propelled by an integrated hydraulic power system. The system was also equipped with electronic instrumentation including an Extended Octagonal Ring Transducer (EORT) and a data logger. The factorial experiment (4 × 3 × 3) with three replications was used based on Randomized Complete Block Design (RCBD). The independent variables were lift angle of the blade (45, 70, 90 and 120°), forward speed (2, 4 and 6 km h–1) and working depth (10, 25 and 40 cm). The variance analysis for the draft force shows that all independent variables affect the draft force at 1% level of significance. The trend of the draft force against working depth and forward speed had almost a linear increase. However, the trend of the draft force against the lift angle is reversed for lift angles > 90°. This finding, conflicts with the results of analytical and numerical studies which extrapolate the results achieved for acute lift angles to obtuse lift angles and have not been reported experimentally.

Keywords

blade; draft force; lift angle; numerical prediction; soil
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@article{paperid:1040564,
author = {Abbaspour Fard, M. Hossein and Hoseini Khan Beh Been, Seyed Ali and Aghkhani, Mohammad Hossein and Ahmad Sharifi},
title = {The behavior of tillage tools with acute and obtuse lift angles},
journal = {Spanish Journal of Agricultural Research},
year = {2014},
volume = {12},
number = {1},
month = {March},
issn = {1695-971X},
pages = {44--51},
numpages = {7},
keywords = {blade; draft force; lift angle; numerical prediction; soil bin},
}

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%0 Journal Article
%T The behavior of tillage tools with acute and obtuse lift angles
%A Abbaspour Fard, M. Hossein
%A Hoseini Khan Beh Been, Seyed Ali
%A Aghkhani, Mohammad Hossein
%A Ahmad Sharifi
%J Spanish Journal of Agricultural Research
%@ 1695-971X
%D 2014

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