From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 3257/CH8/EX8.2/Ex8_2.sce | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100755 3257/CH8/EX8.2/Ex8_2.sce

(limited to '3257/CH8/EX8.2/Ex8_2.sce')

diff --git a/3257/CH8/EX8.2/Ex8_2.sce b/3257/CH8/EX8.2/Ex8_2.sce
new file mode 100755
index 000000000..041705b76
--- /dev/null
+++ b/3257/CH8/EX8.2/Ex8_2.sce
@@ -0,0 +1,23 @@
+// Comparison of forming and machining energy
+clc
+d_i = 10 // diameter in mm
+l = 125 // length in mm
+del_d = 0.5 // reduction in diameter in mm
+K = 1275 // constant in MPa
+n = 0.45 // constant
+Es = 4.1 // Specific energy in machining in W-S/mm^3
+printf("\n Example 8.2")
+printf("\n\n Part A:")
+d_o = d_i - del_d
+epsilon = log((d_i/d_o)^2)
+u = K*1e6*epsilon^(n+1)/(1+n)
+W_tension = u*%pi*l*1e-3*(del_d*1e-2)^2
+
+printf("\n Work done by pulling in tension is %d Nm.",W_tension)
+printf("\n\n Part B:")
+V = %pi/4*(d_i^2-d_o^2)*l
+W_mach = Es*V
+ratio = W_mach/W_tension
+printf("\n Work done by machining on lathe is %d Nm.",W_mach)
+printf("\n Work done on machining is about %d time higher than that of tension.",ratio)
+
-- 
cgit