Analytical approach for the prediction of steady state tyre forces and moments under different normal pressure distributions

Rao, Seeram Srinivasa; Ramji, K.; Naidu, M. K.

doi:10.1016/j.jterra.2012.10.002

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…From the results presented in Figure 3 we can see that tractor slip varied in the range from 6.5 to 13.5% during all the tests. This corresponds to the tractor slip that is recommended for tillage works in a number of sources Battiato, Diserens, Laloui, & Sartori, 2013;Moitzi et al, 2013;Srinivasa Rao et al, 2012;Šmerda & Čupera, 2010). In loam stubble of average moisture and hardness, such slip corresponds to adequate grip of driving wheels with the soil Janulevičius & Giedra, 2008;Maclaurin, 2014;Zoz & Grisso, 2003).…”

Section: Resultsmentioning

confidence: 99%

“…The other possibility is to enlarge the contact area between tires and terrain. With enlargement of the contact area between tires and terrain, tractor tires make less negative effect on the field and the result is less compacted soil under the tracks (Saengprachatanarug, Ueno, Taira, & Okayasu, 2013;Srinivasa Rao et al, 2012;Way & Kishimoto, 2004). Furthermore, due to the larger contact area, rolling resistance is smaller in soft soil Molari et al, 2012;Taghavifar & Mardani, 2013).…”

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confidence: 99%

“…Depth of the tracks depends on the mass, soil hardness, tire dimensions and tire inflation pressure. Tire inflation pressure also influences how much the wheels slip and is regarded as on important factor affecting tractor field performance indicators, such as draft power (Senatore & Sandu, 2011;Srinivasa Rao et al, 2012;Šmerda & Čupera, 2010;Taghavifar & Mardani, 2013).…”

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Influence of Extra Weight and Tire Pressure on Fuel Consumption at Normal Tractor Slippage

Damanauskas¹,

Janulevičius²,

Pupinis³

2015

JAS

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Tire pressure and wheel load are both easily managed parameters which play a significant role in tillage operations for limiting slip which involves energy loss. To a great extent, this aspect affects the fuel consumption and the time required for soil tillage. The study was focused on the tire pressure and extra weight variation effect on fuel consumption and work productivity for soil tillage at normal tractor wheels slippage (7-15%). The experimental research unit composed of an 82.3 kW 4WD tractor and a reversible 4-bodies plough is presented. Tests were carried out on a stubble loam, where slip of tractor driving wheels was  15%, tractor front ballast mass was varied in the range from 0 to 520 kg and inflation pressure in the tires from 240 kPa to 100 kPa. Dependences of tractor performance indicators on ballast mass and tires inflation pressure are presented. When tractor tire slip varies in the range from 7 to 15 percent (which is normal slip in the soil), reducing the tires inflation pressure decreases the driving wheel slip and fuel consumption, while increases work productivity. Increasing the additional mass of the tractor (adding ballast weights) decreases the driving wheel slip, increases work productivity, but also increases fuel consumption and soil compaction.

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