2 files changed, 68 insertions, 0 deletions
diff --git a/764/CH12/EX12.12.b/result12_12.txt b/764/CH12/EX12.12.b/result12_12.txt
new file mode 100755
index 000000000..a3917c001
--- /dev/null
+++ b/764/CH12/EX12.12.b/result12_12.txt
@@ -0,0 +1,47 @@
+-->//(Brakes) Example 12.12
+ 
+-->//Troque capacity of the disk brake Mt (N-m)
+ 
+-->Mt = 1500
+ Mt  =
+ 
+    1500.  
+ 
+-->//Outer radius of the pad Ro (mm)
+ 
+-->Ro = 150
+ Ro  =
+ 
+    150.  
+ 
+-->//Inner radius of the pad Ri (mm)
+ 
+-->Ri = 100
+ Ri  =
+ 
+    100.  
+ 
+-->//Coefficient of friction mu
+ 
+-->mu = 0.35
+ mu  =
+ 
+    0.35  
+ 
+-->//Average pressure on the pad pavg (MPa)
+ 
+-->pavg = 2
+ pavg  =
+ 
+    2.  
+ 
+-->//Number of pads n
+ 
+-->n = 2
+ n  =
+ 
+    2.  
+ 
+
+Angular dimension of the pad(theta) = 77.543160 deg
+ 
+\ No newline at end of file
diff --git a/764/CH12/EX12.12.b/solution12_12.sce b/764/CH12/EX12.12.b/solution12_12.sce
new file mode 100755
index 000000000..8a76cdef1
--- /dev/null
+++ b/764/CH12/EX12.12.b/solution12_12.sce
@@ -0,0 +1,21 @@
+
+//Obtain path of solution file
+path = get_absolute_file_path('solution12_12.sce')
+//Obtain path of data file
+datapath = path + filesep() + 'data12_12.sci'
+//Clear all 
+clc
+//Execute the data file
+exec(datapath)
+//Calculate the torque capacity of each pad mt (N-m)
+mt = Mt/n
+//Calculate the friction radius Rf (mm)
+Rf = (2 * (Ro^3 - Ri^3))/(3 * (Ro^2 - Ri^2))
+//Calculate the actuating force P (N)
+P = (mt * 1000)/(mu * Rf)
+//Calculate the area of the pad A (mm2)
+A = P/pavg
+//Calculate the angular dimension of the pad theta (deg)
+theta = ((2 * A)/(Ro^2 - Ri^2))*180/%pi
+//Print results
+printf("\nAngular dimension of the pad(theta) = %f deg\n",theta)