Stress distributions along the roll contact arc
Abstract
The article provides the results of a mathematical description of the distribution of contact stresses of a roll module with smooth rollers. Analysis of the developed models shows that when the rollers rotate, the maximum of the normal stress distribution diagram is displaced in the direction opposite to the movement of the material being processed; the displacement depends on the properties of the material being processed and the forces acting on the rollers. Under static contact, shear stresses are distributed symmetrically relative to the line of centers. In the same way, they are distributed along the arc of contact of the rotating roller close to rotational resistance equal to zero. As the rotational resistance increases, the distribution changes and becomes asymmetrical. In the drive roller, the neutral angle shifts in the direction opposite to the movement of the material, and the free roller, it shifts along the direction of movement.