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

---
 764/CH7/EX7.23.b/solution7_23.sce | 54 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100755 764/CH7/EX7.23.b/solution7_23.sce

(limited to '764/CH7/EX7.23.b/solution7_23.sce')

diff --git a/764/CH7/EX7.23.b/solution7_23.sce b/764/CH7/EX7.23.b/solution7_23.sce
new file mode 100755
index 000000000..11467f4cd
--- /dev/null
+++ b/764/CH7/EX7.23.b/solution7_23.sce
@@ -0,0 +1,54 @@
+
+function[] = plot_format()
+    //Get the handle of current axes
+    g = gca()
+    //Give labels and set label properties
+    g.labels_font_color=5
+    g.font_size=3
+    g.grid=[1,1]
+    g.box="off"
+endfunction
+
+//Obtain path of solution file
+path = get_absolute_file_path('solution7_23.sce')
+//Obtain path of data file
+datapath = path + filesep() + 'data7_23.sci'
+//Clear all
+clc
+//Execute the data file
+exec(datapath)
+//Calculate the value of Kd
+Kd = 1/Kf
+//Calculate the endurance limit stress for bolt Se (N/mm2)
+Se = Kd * Sdash
+//Plot modified Goodman diagram
+//The common quadrilateral in the plot is the area of concern
+y1 = {Se 0}
+x1 = {0 Sut}
+y2 = {Syt 0}
+x2 = {0 Syt}
+plot(x1,y1,'--*')
+plot(x2,y2,'-*')
+plot_format()
+title('Modified Goodman diagram (Example 7.23)')
+xlabel('sigmaM (N/mm2)')
+ylabel('sigmaA (N/mm2)')
+//Calculate the initial pre-load in the bolts Pitotal (N)
+Pitotal = PSeat*((%pi/4)*((Do^2) - (Di^2)))
+//Calculate the pre-load per bolt Pi (N)
+Pi = Pitotal/N
+//Calculate the total external load Fmax per bolt(N)
+Fmax = ((%pi/4)*((Di + ((Do - Di)/2))^2)*Pmax)/N
+//Calculate the total external load Fmin per bolt(N)
+Fmin = ((%pi/4)*((Di + ((Do - Di)/2))^2)*Pmin)/N
+//Calculate the maximum and minimum forces on the bolt (N)
+PMAX = Pi + ((kb/(kb + kc)) * Fmax)
+PMIN = Pi + ((kb/(kb + kc)) * Fmin)
+//Calculate the mean force and force amplitude (N)
+Pm = (PMAX + PMIN)/2
+Pa = (PMAX - PMIN)/2
+//Calculate the actual core cross-section area of the bolt A (mm2)
+A = (Pa + (Pi/((1 + (Sut/Se)) * fs)))/(Sut/((1 + (Sut/Se))*fs))
+//Choose proper diameter from Table 7.1
+//Print results
+printf('\nCore cross-section area of the bolt(A) = %f mm2\n',A)
-- 
cgit