Optimization of the Angle of Frog in Mouldboard Tillage Operations in Sandy Clay SoilReportar como inadecuado




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This paper investigated the effect of three independent variables including: tillage speed ranges of below 2.5 m-s and between 2.5 m-s and 5 m-s, tillage depth range of 10 cm from 0 cm to 30 cm and frog angle 30° 40°, and 50° on draught forces. The experimental work was completed with determination of the draught forces using an analytical method Saunders Equation. Numerical Simulation: Discrete Element Method DEM was used to verify the results obtained analytically. The results indicated that tillage depth has a stronger influence on the draught forces as compared to the tillage speed. Minimal draught forces can then be achieved through operating at shallow tillage depth and maintaining a frog angle of 30°. The results showed a variance of ±15.95% to the calculated values supporting DEM as a numerical method capable of predicting draft forces correctly, tillage power optimization and determination of optimal frog angle for the mouldboard plough.

KEYWORDS

DEM, EDEM, Soil-Cut Interactions, Modelling, Tillage, Draught

Cite this paper

Hiuhu, A. , Gitau, A. , Mbuge, D. and Mulwa, J. 2015 Optimization of the Angle of Frog in Mouldboard Tillage Operations in Sandy Clay Soil. Open Journal of Optimization, 4, 131-140. doi: 10.4236-ojop.2015.44013.





Autor: Angela Hiuhu*, Ayub Njoroge Gitau, Duncan Onyango Mbuge, John Ndisya Mulwa

Fuente: http://www.scirp.org/



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