On the Shape Factor for the Maximum Pressure of the Undercut Groove Form

The effective coefficient of friction between the ropes and grooves depends on the geometrical shapes of the grooves and the actual coefficients of friction. The effect of the changes in the groove angle and undercutting angle on the coefficient of friction and the traction are also studied. Therefore this work introduces the concept of shape factors for the maximum specific pressure for undercut grooves namely round and undercut grooves and also derives it by means of stress fuction method.