Influence of contact friction on the stress state of strip in drawing

Leather squeezing efficiency analysis

“…In this case, the cloth can reabsorb fluid from the skin. Reverse absorption is a surface effect that occurs along the straight part of the roll contact curve [13,15]. The content of moisture absorbed back depends on the properties of the cloth.…”

“…Theoretical models of residual moisture were mainly obtained based on solving the problem of fluid filtration in a deformable porous medium, and the main studies were conducted to determine the moisture in paper after pressing on papermaking machines [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. One of the significant drawbacks of these models is solving the filtration problem without considering the phenomenon of contact interaction in the squeezing zone.…”

Analysis of the Contact Stresses in the Zone of Plastic Deformation With Sign-Variable Friction Forces

“…Согласно работам [6,7] примем, что касательные напряжения в зоне застоя линейно зависят от координат φ и x: (7) где x = h x / h 1 ; h x -текущая толщина полосы в зоне застоя; a и b -коэффициенты, определяемые значениями контактных касательных напряжений на границах этой зоны.…”

Calculation formulas for contact curves of technological machine

“…The contact interaction of a deformable material and the roller with elastic coating can be considered by analogy with the elastic wheel rolling on the deformable ground [2]. The issues of interaction between an elastic wheel and deformable ground were studied quite extensively [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], however, some issues remained unclear. In some publications on this issue, the rear part of the contact curve is plotted as a straight line, and in other publications, it is presented as a curve; however, analysis of the changes in the curve due to the forces and moments acting on the wheels is incomplete.…”