STUDIES ON SOIL STRESS VIA COMPUTER SIMULATION: IMPACT OF TIRE INFLATION PRESSURE
ABSTRACT Soil compaction configures a major threat to soil structural quality. Mitigating compaction induced by agricultural machinery involves knowing the state of stress transmission in the soil which in turn is affected by tire inflation pressure. Hence, this study evaluated the impact of three t...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Engenharia Agrícola
2025-05-01
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| Series: | Engenharia Agrícola |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162025001000305&lng=en&tlng=en |
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| Summary: | ABSTRACT Soil compaction configures a major threat to soil structural quality. Mitigating compaction induced by agricultural machinery involves knowing the state of stress transmission in the soil which in turn is affected by tire inflation pressure. Hence, this study evaluated the impact of three tire inflation pressure levels from a sugarcane harvesting truck on soil stress propagation. Using the 'PredComp' computational model and machine and tire parameters, simulations were performed for 70, 100 and 130% of the recommended inflation pressure which corresponded, respectively, to pressures of 350, 500, and 650 kPa. Size of contact area decreased as the inflation pressure increased, yielding values of 0.13 m2, 0.12 m2 and 0.11 m2; whereas the maximum stress levels in the center of the tires increased by 465, 623 and 784 kPa to 70, 100 and 130% of inflation pressure, respectively. The propagated stress levels at layers 10 or 30 cm deep were −5% to 70% of the inflation pressure and +5% to 130% of the inflation pressure in relation to the reference (100%). Our simulations indicate that the increase in inflation pressure can increase the stress levels at the tire-soil interface thereby increasing the mechanical stresses propagated is the topsoil and subsoil by approximately 5%, which increases the risk of compaction if the stress levels exceed soil load-bearing capacity. |
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| ISSN: | 0100-6916 |