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2006, vol. 31, iss. 2, pp. 1-8
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Dynamics changes values parameters of mechanical properties of the marsh soil due to tractor track slippage
Dinamika promene vrednosti parametara mehaničkih osobina ritskih zemljišta u funkciji klizanja gusenica traktora
University of Belgrade, Faculty of Agriculture, Serbia
Abstract
The paper presents the impact of different slippage of driving systems of the crawler tractors on the dynamics changes of the parameters values mechanical properties on the marsh area (shear stress, moment of torsion, cone index CI). The analysis of the results (Ivanovo area) has shown a different increase of the shear stress for the tractor BNT-105 tracks trail (in comparison with the un treaded soil), with the smallest tractor tracks slippage δ=3%, (10-30 cm depth) from 6.96 to 13.74 kPa. The analysis of the shear stress mean values, with the biggest tracks slippage (δ=10%) has shown the following changes from 8.19 to 14.05 kPa. The analysis of the results for tractor TG-160 (Makiš area), has shown a different increase of the shear stress in the tracks trail, with the smallest slippage of the tracks (δ=3%) at the same soil depth, of the shear stress is 8.53 to 17.12 kPa. The analysis of the shear stress mean values, for maximum slippage δ=10%, has shown the changes from 8.50 to 18.87 kPa. In order to protect soil from damages due to slippage caused by tractor driving systems, we must permanently improve the elements of running systems and introduce new generation rubber track tractors in regular agricultural production.
Sažetak
U radu su prikazana ispitivanja uticaja različitih vrednosti klizanja hodnih sistema traktora guseničara, na dinamiku promene mehaničkih osobina zemljišta (napona smicanja, momenta torzije i otpora penetracije-CI). Analiza rezultata ispitivanja napona smicanja zemljišta (Ivanovo), ispod hodnih sistema traktora BNT-105, prilikom poređenja negaženo-gaženo zemljište za najmanje izraženo klizanje gusenica (δ=3%) pokazuje promenu napona smicanja od 6,96 do 13,74 kPa. Analiza srednjih vrednosti ovih parametara zemljišta za najveće klizanje (δ=10%) ima promene vrednosti od 8.19 do 14.05 kPa. Analiza rezultata, za najmanje (δ=3%), izraženo klizanje gusenica traktora TG-160 (Makiš) pokazuje promenu napona smicanja od 8.53 do 17.12 kPa. Analiza vrednosti napona smicanja zemljišta za najveće klizanje (δ=10%), ima promene od 8.50 do 18.87 kPa. U obavezi zaštite zemljišta od oštećenja prouzrokovanim i klizanjem hodnih sistema traktora, treba stalno usavršavati elemente hodnih sistema i primenjivati nove generacije gumenih gusenica u redovnoj poljoprivrednoj proizvodnji.
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