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Spatial distribution of soil forces on moldboard plough and draft requirement operated in silty-clay paddy field soil

Irshad Ali Mari, Changying Ji, Farman Ali Chandio, Chuadry Arslan, Asma Sattar, Fiaz Ahmad  
Journal of Terramechanics, Volume 60, August 2015, Pages 1-9, ISSN 0022-4898,
Spatial distribution of soil forces on the surface of plough is an important aspect that can help engineers for improving efficiency of tillage implement. It was analyzed at eleven different points of the moldboard plough with the help of sensors accompanied with the virtual instrument developed in LabView software with the aid of other supporting instruments. It was observed that soil forces increased with an increase in speed and depth. Depth changed soil forces more at upper parts than lower parts whereas speed affected rear parts more than the front part of the plough. Draft forces followed almost similar trend and least value of 308.17 N experimental draft force was found at 1 m/s speed and 5 cm depth under 33% moisture content. Cumulative soil forces found too smaller than the draft as they represented the force spatial distribution of specific parts of plough. It was observed that sensor technology provided real time picture of force variation during tillage process that could save time and effort.
Keywords: Spatial distribution of force; Soil force; Plough; Soil bin; Draft; Force sensors