Área de contato e volume de solo deformado por pneu agrícola diagonal em diferentes pressões de inflação.

Abstract

The present work aimed to evaluate the effects of inflation pressure variation in a Goodyear 23.1-30 Dyna Torque II agricultural tire, on tire contact area with the soil and on deformed soil volume, under static conditions. Three inflation pressures were evaluated: 50% of the recommended pressure; the normally recommended pressure; and 50% above the recommended pressure. A new methodology was proposed to evaluate soil deformation, by which soil volume was evaluated by molding the tire marks imprinted in a sand box. The results allowed to conclude that the proposed methodology is reliable; inflation pressure variations and tire contact area with the soil have inverse but not proportional behaviors, while tire contact area and soil volume deformed by the tire have similar behaviors.