Force parameters of roller machines

Abstract

To facilitate the force analysis of the roller machine under consideration, the previously obtained model of the pattern of distribution of normal contact forces is approximated by an empirical dependence. The moduli of the main vector of elementary normal and tangential forces of each roll, the main moments of elementary forces relative to the axis of each roll are determined. It is revealed that the qualitative distribution pattern of normal contact forces gives the magnitude of forces and moments, expressed through the maximum of the normal force.

Leather squeezing efficiency analysis

“…We consider leather and cloth to be two-phase media, consisting of a skeleton and fluid filling the pores between them. Due to the fact that the semi-finished product under the dyeing and fatliquoring processes is kept in liquid for a long time, there is no third phase -air, and the cloth, before coming into contact with the skin, is saturated with fluid from a water wedge formed as a result of squeezing moisture out of the pressing zone [23].…”

“…In [19][20][21][22][23][24], the residual moisture content of wet material was determined considering the phenomenon of contact interaction in the squeezing zone, that is, by jointly solving the problem of contact interaction and moisture filtration. However, these models are too complex for practical use, and they also use empirical dependencies obtained experimentally.…”