-->//(Brakes) Example 12.9
 
-->//Face width of the friction lining w (mm)
 
-->w = 50
 w  =
 
    50.  
 
-->//Maximum intensity of normal pressure pmax (N/mm2)
 
-->pmax = 1
 pmax  =
 
    1.  
 
-->//Coefficient of friction mu
 
-->mu = 0.3
 mu  =
 
    0.3  
 
-->//Radius of the drum R (mm)
 
-->R = 250
 R  =
 
    250.  
 
-->//All angles are taken from the same reference
 
-->//Angles of the shoe theta1 and theta2
 
-->theta1 = 15
 theta1  =
 
    15.  
 
-->theta2 = 75
 theta2  =
 
    75.  
 
-->//Maximum normal pressure occurs at angle fi (deg)
 
-->if (theta2 > 90)
-->    fi = 90
-->else
-->    fi = theta2
 fi  =
 
    75.  
-->end
 
-->//Distance of the force from the horizontal centerline d1 (mm)
 
-->d1 = 200
 d1  =
 
    200.  
 
-->//The distance of the pivot from the axis of the brake drum h (mm)
 
-->h= 200
 h  =
 
    200.  
 
-->//Distance of the pivot from the vertical centerline d2 (mm)
 
-->d2 = 50
 d2  =
 
    50.  
 

Actuating force(P) = 5025.457606 N

Torque absorbing capacity of the brake with 4 shoes(Mt) = 2181614.276244 N-mm