1 files changed, 27 insertions, 0 deletions
diff --git a/278/CH27/EX27.3/ex_27_3.sce b/278/CH27/EX27.3/ex_27_3.sce
new file mode 100755
index 000000000..31bde7416
--- /dev/null
+++ b/278/CH27/EX27.3/ex_27_3.sce
@@ -0,0 +1,27 @@
+//find
+clc
+//solution
+//given
+Wr=4000//N
+Wa=5000//N
+N=1600//rpm
+Lh=5*300*10//hrs//bearing life in hours
+L=60*N*Lh//rev
+//W=XVWr + YWa
+//from tale 27.4,..we get 
+X=0.56
+Y=1
+V=1
+W=0.56*1*Wr +1*Wa//N
+C=W*(L/10^6)^(1/3)
+printf("dynamic load rating is,%f kN\n",C)
+//from table 27.6, bearing numbr 315.
+Co=72000//N
+C1=90000//N
+//Wa/Co=0.07,..
+//from table 27.4
+X1=0.56
+Y1=1.6
+W=0.56*1*Wr + 1.6*Wa//N
+Cb=W*(L/10^6)^(1/3)
+printf("basic dynamic load rating is,%f kN\n",Cb)