* Department of Tractors and Automobiles, College of Agricultural Engineering, The University of Agricultural Sciences, Godollo, Hungary
Abstract:
The author has applied traction-slip curves obtained from drawbar pull tests to determine values of the adhesive parameters controlling the peripheral forces of rubber tires rolling on concrete. The method is based on an analogy with soil shear strength characterized by cohesion, the angle of internal friction, and the tangent modulus of the derived shear-deformation curve. The peripheral force generated by a tire rolling on concrete is the total force required to shear the interlocking elementary particles in the contact patch. The adhesive parameters derived using this method are average values expressing the effect of all factors which contribute to producing the peripheral force.