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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /764/CH7/EX7.18.c | |
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initial commit / add all books
Diffstat (limited to '764/CH7/EX7.18.c')
| -rwxr-xr-x | 764/CH7/EX7.18.c/functions7_18.sci | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/764/CH7/EX7.18.c/functions7_18.sci b/764/CH7/EX7.18.c/functions7_18.sci new file mode 100755 index 000000000..b53d32df5 --- /dev/null +++ b/764/CH7/EX7.18.c/functions7_18.sci @@ -0,0 +1,48 @@ +
+//Function generating the values of Ka, Kb and Kc
+function [Ka, Kb, Kc] = fluctuate(s, d, r)
+ //Calculate Ka
+ //Nomenclature:
+ //1 - Ground
+ //2 - Machined or cold drawn
+ //3 - Hot-rolled
+ //4 - Forged
+surface = [1 2 3 4]
+Ksurfa = [1.58 4.51 57.7 272]
+Ksurfb = [-0.085 -0.265 -0.718 -0.995]
+for j = 1:1:4
+ if (s == surface(j))
+ a = Ksurfa(j)
+ b = Ksurfb(j)
+ break
+ end
+end
+//From equation 5.18 on page 157
+Ka = a * (Sut^b)
+if (Ka > 1) then
+ Ka = 1
+end
+
+ //Calculate Kb
+ //d (mm)
+ if (d <= 7.5) then
+ Kb = 1
+ elseif ((d > 7.5) & (d <= 50))
+ Kb = 0.85
+ elseif (d > 50)
+ Kb = 0.75
+ else
+ printf('Error in Kb')
+ end
+
+ //Calculate Kc
+ // r (%)
+rel = [50 90 95 99 99.9 99.99 99.999]
+Krel = [1 0.897 0.868 0.814 0.753 0.702 0.659]
+for i = 1:1:7
+ if (r == rel(i)) then
+ Kc = Krel(i)
+ break
+ end
+end
+endfunction
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