MODELING OF DIFFERENT SUBSOILER TINES PERFORMANCE USING DISCRETE ELEMENT METHOD

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SHAHGHOLI GHOLAMHOSSEIN; HAJIMAMANDI SIRVAN

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Journal: Iranian Journal of Biosystems Engineering Year:2016 | Volume:47 | Issue:1 Page(s): 73-82

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Title

MODELING OF DIFFERENT SUBSOILER TINES PERFORMANCE USING DISCRETE ELEMENT METHOD

Author(s)

SHAHGHOLI GHOLAMHOSSEIN | HAJIMAMANDI SIRVAN | Issue Writer Certificate

Keywords

SUBSOILERQ3

BENTLEG TINEQ1

PARAPLOWQ1

DRAFTQ1

Abstract

For the design of tillage implements it is indispensable to estimate the soil forces exerted upon the implements. Many researches have shown that the numerical method of Discrete Element Method (DEM) is the cheapest as well as the fastest technique for modeling such granular material as soil, and especially the sandy ones. In this study, Para plow and BENTLEG TINEs' performances were compared with those in the conventional tine, using experimental, as well as numerical methods. The Experiments were conducted in a soil bin at the Agricultural Machinery Department of Urmia University as based upon a factorial experimental design of three replications. Three types of tines, at 5 levels of travel speeds of 1, 1.5, 2, 2.5, and 3 km/h at constant depths of 35 cm were examined. Before modeling to calibrate DEM parameters, soil parameters were calibrated through shear test simulation. Later tine and soil bin of certain dimensions were modeled through PFC3D software. Results of analysis of variance and mean comparison showed that tine type and travel speed had significantly affected the DRAFT force. A maximum DRAFT requirement of 1541 N at forward velocity of 3 km/h and minimum value of 294.8 N were related to the conventional and BENTLEG TINEs, respectively. With increase in tool velocity connective energy between particles, frictional work between tine and soil particles and kinetic energy of soil particles increased, the increment contributing to DRAFT increment. BENTLEG TINE had the lowest DRAFT in comparison with the other tines, while the conventional tine the highest. A high correlation between test vs. modeling results (R2=09935) showed that discrete element method can lead to the simulation of the effect of the tine type, and travel velocity on DRAFT force. An average relative error of 6.871% was found between the test and modeling results.

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APA: Copy

SHAHGHOLI, GHOLAMHOSSEIN, & HAJIMAMANDI, SIRVAN. (2016). MODELING OF DIFFERENT SUBSOILER TINES PERFORMANCE USING DISCRETE ELEMENT METHOD. IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 47(1), 73-82. SID. https://sid.ir/paper/144232/en

Vancouver: Copy

SHAHGHOLI GHOLAMHOSSEIN, HAJIMAMANDI SIRVAN. MODELING OF DIFFERENT SUBSOILER TINES PERFORMANCE USING DISCRETE ELEMENT METHOD. IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2016;47(1):73-82. Available from: https://sid.ir/paper/144232/en

IEEE: Copy

GHOLAMHOSSEIN SHAHGHOLI, and SIRVAN HAJIMAMANDI, “MODELING OF DIFFERENT SUBSOILER TINES PERFORMANCE USING DISCRETE ELEMENT METHOD,” IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 47, no. 1, pp. 73–82, 2016, [Online]. Available: https://sid.ir/paper/144232/en

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