1 files changed, 38 insertions, 0 deletions
diff --git a/698/CH18/EX18.3/P3_strength_of_gear_pair.sce b/698/CH18/EX18.3/P3_strength_of_gear_pair.sce
new file mode 100644
index 000000000..fca93a04d
--- /dev/null
+++ b/698/CH18/EX18.3/P3_strength_of_gear_pair.sce
@@ -0,0 +1,38 @@
+clc
+//Example 18.3
+//Strength  of gear pair
+
+P=12e3
+N=1000
+phi=14.5
+m=6
+b=60
+
+Np=30
+Ng=75
+yp=0.101
+
+S_bend_perm=100e6
+surface_endurance=600e6
+E=100e9
+
+printf('Beam Strength:\n\tBoth gears are made of same material, hence the pinion is weaker\n')
+
+Mt = (P*60)/(2*%pi*N)
+Rp=(m*Np)/2
+F=Mt/Rp
+printf('F = s b Pc y = %0.3f N\n',F)
+s=F/(b*1e-3*%pi*0.006*yp)
+printf('Induced stress s=%0.3f MPa\n',s*1e-3)
+printf('Induced stress < Permissible stress\n\tHence it is safe in bending\n\n')
+
+printf('Wear Strength:\n')
+printf('Fw=Dp b K Q\n')
+Dp=2*Rp
+K=(surface_endurance^2 * sind(phi) * ((1/E)+(1/E)))/1.4
+Q=(2*Ng)/(Ng+Np)
+Fw=Dp*1e-3*b*1e-3*K*Q
+printf('\t=%0.3f N\n',Fw)
+printf('The pair is strong in wear as well.')
+
+//End of programme
+\ No newline at end of file