Tractor forward velocity and tire load effects on soil compaction

Çarman, Kazım

doi:10.1016/0022-4898(94)90029-9

Cited by 17 publications

(11 citation statements)

References 8 publications

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“…ÇARMAN (1994), avaliando os efeitos da variação da carga dinâmica sobre os pneus traseiros e da velocidade de deslocamento de um trator na compactação do solo, observou que a densidade do solo sob os pneus, na profundidade de 0,0 a 0,10 m, aumentou com o aumento da carga sobre o pneu e diminu iu com o aumento da velocidade, que, quando elevada de 0,78 para 2,5 m s -1 , reduziu em 7,6% a densidade do solo.…”

Section: Resultsunclassified

Influência da pressão interna dos pneus e da velocidade de deslocamento nos parâmetros operacionais de um trator agrícola e nas propriedades físicas do solo

Feitosa¹,

Fernándes²,

Teixeira³

et al. 2015

Eng. Agríc.

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RESUMO: O tráfego intenso de tratores ocasiona alterações na qualidade física do solo, desencadeando processos de compactação e erosão. O presente trabalho teve como objetivo avaliar a influência da alteração da pressão interna dos pneus e da velocidade de deslocamento de um trator agrícola 4 x 2 com tração dianteira auxiliar (TDA), em propriedades físicas de um solo usadas como parâmetros para a avaliação da compactação e em parâmetros operacionais do trator relacionados ao seu desempenho. Para tanto, foram determinadas a densidade do solo, a porosidade total e o índice de cone de amostras de solo coletadas antes e após a passagem do trator. Determinou-se, ainda, o avanço cinemático do trator, a patinagem dos rodados, a área de contato entre o pneu e o solo, e a pressão de contato aplicada à superfície do solo. O uso de diferentes combinações de pressões internas e de velocidades de deslocamento não alteraram a patinagem dos rodados do trator, nem o índice de cone do solo. A densidade foi afetada apenas pelas velocidades de deslocamento. A aplicação das pressões de 110 e 124 kPa, respectivamente, nos pneus dianteiros e traseiros do trator, combinada com a velocidade de deslocamento de 1,51 m s -1 ocasionou a ma ior redução na porosidade total. PALAVRAS-CHAVE: compactação, densidade do solo, patinagem dos rodados, porosidade. INFLUENCE OF TIRE INNER PRESSURE AND TRAVELLING SPEED ON TRACTOR OPERATING PARAMETERS AND SOIL PHYSICAL PROPERTIESABSTRACT: Heavy traffic of tractors causes changes in soil physical quality triggering compaction and erosion. This study aimed to evaluate the influence of tire inner pressure and travelling speed of a 4x2 FWA (front wheel assist) farm tractor on soil physical properties, using the parameters of soil compaction evaluation, and tractor operating parameters related to the machine performance. For these purposes, soil bulk density, total porosity and cone index were determined from soil samples collected before and after tractor passage. Moreover, it was also analyzed tractor kinematic advance, wheel slipping, ground-tire interface and soil surface pressure beneath the tires. Varied inner pressure and travelling speed sets did not change both soil wheel slipping and cone index. On the other hand, soil density was affected only by travelling speed changes. A greater reduction in total porosity was observed by applying 124 and 110 kPa pressure in tractor front and rear tires, respectively, in combination with 1.51 m s -1 travelling speed.

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Section: Resultsunclassified

Influência da pressão interna dos pneus e da velocidade de deslocamento nos parâmetros operacionais de um trator agrícola e nas propriedades físicas do solo

Feitosa¹,

Fernándes²,

Teixeira³

et al. 2015

Eng. Agríc.

View full text Add to dashboard Cite

show abstract

“…The effect of field traffic on penetration resistance, as expected, was more negative in 0-10 cm depths (Table 3). Accordingly, Carman (1994) and Seker and Isildar (2000) determined a higher compaction ratio in the 0-10 and 0-15 cm surface layers respectively. A penetration resistance value as high as 3.60 MPa in the surface layer caused by five passes in the control treatment ( Fig.…”

Section: Soil Penetration Resistancementioning

confidence: 99%

Cooperative effects of field traffic and organic matter treatments on some compaction-related soil properties

et al. 2017

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Abstract. Soil compaction is a common problem of mineral soils under conventional tillage practices. Organic matter addition is an efficient way of reducing the effects of field traffic in soil compaction. The aim of this study was to investigate the effects of number of tractor passes (one, three, and five) on depth-dependent (0-10 and 10-20 cm) penetration resistance, bulk density, and porosity of clay-textured soil (Typic Xerofluvent) under organic vegetable cultivation practices in the 2010-2013 growing seasons. Fields were treated with farmyard manure (FYM, 35 t ha −1 ), green manure (GM; common vetch, Vicia sativa L.), and conventional tillage (CT). The number of tractor passes resulted in increases in bulk density and penetration resistance (CT > GM > FYM), whereas the volume of total and macropores decreased. The maximum penetration resistance (3.60 MPa) was recorded in the CT treatment with five passes at 0-10 cm depth, whereas the minimum (1.64 MPa) was observed for the FYM treatment with one pass at 10-20 cm depth. The highest bulk density was determined as 1.61 g cm −3 for the CT treatment with five passes at 10-20 cm depth; the smallest value was 1.25 g cm −3 in the FYM treatment with only one pass at 0-10 cm depth. The highest total and macropore volumes were determined as 0.53 and 0.16 cm 3 cm −3 respectively at 0-10 cm depth for the FYM treatment with one pass. The volume of micropores (0.38 cm 3 cm −3 ) was higher at 0-10 cm depth for the FYM treatment with three passes. It can be concluded that organic pre-composted organic amendment rather than green manure is likely to be more efficient in mitigating compaction problems in soil.

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“…This study was conducted under controlled conditions in a soil bin at the Department of Agricultural Machinery, Selçuk University, Turkey by using a single-wheel agricultural tire test machine as described by Çarman and Aydin [16]. The soil bin used in these tests was 20 m long, 2.25 m wide and 1m deep.…”

Section: Methodsmentioning

confidence: 99%

“…Where N d is drawbar power, N a is the axle power, W is the dynamic weight/normal load on wheel axle, P is the drawbar pull, V a is the actual velocity and V t is the theoretical velocity [16,18]. ANNs learn by using examples, namely patterns.…”

Section: Methodsmentioning

confidence: 99%

Prediction of Tire Tractive Performance by Using Artificial Neural Networks

Çarman

Taner

2012

MCA

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Abstract-The purpose of this study was to investigate the relationship between travel reduction and tractive performance and to illustrate how artificial neural networks (ANNs) could play an important role in the prediction of these parameters. The experimental values were taken in a soil bin. A 1-4-6-2 artificial neural network (ANN) model with a back propagation learning algorithm was developed to predict the tractive performance of a driven tire in a clay loam soil under varying operating and soil conditions. The input parameter of the network was travel reduction. The output parameters of the network were net traction ratio and tractive efficiency. The relationships were investigated using non-linear regression analysis and ANNs. The performance of the neural network-based model was compared with the performance of a non linear regression-based model using the same observed data. It was found that the ANN model consistently gave better predictions compared to the non linear regressionbased model. Based on the results of this study, ANNs appear to be a promising technique for predicting tire tractive performance.

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Tractor forward velocity and tire load effects on soil compaction

Cited by 17 publications

References 8 publications

Influência da pressão interna dos pneus e da velocidade de deslocamento nos parâmetros operacionais de um trator agrícola e nas propriedades físicas do solo

Influência da pressão interna dos pneus e da velocidade de deslocamento nos parâmetros operacionais de um trator agrícola e nas propriedades físicas do solo

Cooperative effects of field traffic and organic matter treatments on some compaction-related soil properties

Prediction of Tire Tractive Performance by Using Artificial Neural Networks

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