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-->//(Brakes) Example 12.8
-->//Face width of the friction lining w (mm)
-->w = 40
w =
40.
-->//Maximum intensity of normal pressure pmax (N/mm2)
-->pmax = 1
pmax =
1.
-->//Coefficient of friction mu
-->mu = 0.32
mu =
0.32
-->//Radius of the drum R (mm)
-->R = 125
R =
125.
-->//All angles are taken from the same reference
-->//Angles of the shoe theta1 and theta2
-->theta1 = 0
theta1 =
0.
-->theta2 = 120
theta2 =
120.
-->//Distance of the force from the horizontal centerline d1 (mm)
-->d1 = 100.9
d1 =
100.9
-->//Distance of the pivot from the horizontal centerline d2 (mm)
-->d2 = 86.6
d2 =
86.6
-->//Distance of the pivot from the vertical centerline d3 (mm)
-->d3 = 50
d3 =
50.
-->//Maximum normal pressure occurs at angle fi (deg)
-->if (theta2 > 90)
--> fi = 90
fi =
90.
-->else
--> fi = theta2
-->end
Actuating force(P) = 2089.795894 N
Torque absorbing capacity of the brake(Mt) = 434831.051530 N-mm
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