TABLE 3 Lining Pressure and Shoe Braking Torque Associated with Primary Shoe Pressure Given by Equation (4–12) (Unit Width Shoe)

Use of the primary distribution represented by curve 1 in Figure 15 and given by relation (5.15) with a friction coefficient of 0.4 leads to

which produces a pressure distribution having lining pressures at the heel and toe of 21.14 and 3.38 psi, respectively, a torque contribution of 514.36 in.-lb, and a lining force (serve action) of 1119.09 1b. As shown in Figure 17, the pressure distributions on the secondary shoe produce maximum pressures ranging from about 388 to 6023 psi and torque contributions ranging from about 2040 to 3502 in.-lb. Maximum pressure and torque are both obtained from curve 3 in Figure 17.