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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/CH6/EX6.10.b/result6_10.txt | |
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initial commit / add all books
Diffstat (limited to '764/CH6/EX6.10.b/result6_10.txt')
| -rwxr-xr-x | 764/CH6/EX6.10.b/result6_10.txt | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/764/CH6/EX6.10.b/result6_10.txt b/764/CH6/EX6.10.b/result6_10.txt new file mode 100755 index 000000000..c9327b0fd --- /dev/null +++ b/764/CH6/EX6.10.b/result6_10.txt @@ -0,0 +1,112 @@ +-->//(Power Screws) Example 6.10
+
+-->//Refer Fig.6.17 on page 204
+
+-->//Yield tensile strength of 30C8 Syt (N/mm2)
+
+-->Syt = 400
+ Syt =
+
+ 400.
+
+-->//Factor of safety fs
+
+-->fs = 3
+ fs =
+
+ 3.
+
+-->//Punched holes diameter d (mm)
+
+-->d = 50
+ d =
+
+ 50.
+
+-->//Mild steel sheet thickness t (mm)
+
+-->t = 1.5
+ t =
+
+ 1.5
+
+-->//Ultimate shear strength of the sheet metal Sus (N/mm2)
+
+-->Sus = 375
+ Sus =
+
+ 375.
+
+-->//Mass density of balls dense (kg/m3)
+
+-->dense = 7280
+ dense =
+
+ 7280.
+
+-->//Mean radius of balls Rm (mm)
+
+-->Rm = 500
+ Rm =
+
+ 500.
+
+-->//Assume screw pitch p (mm)
+
+-->p = 8
+ p =
+
+ 8.
+
+-->//Coefficient of friction mu
+
+-->mu = 0.15
+ mu =
+
+ 0.15
+
+-->//Minimum lead required lmin (mm)
+
+-->lmin = 5 * 4
+ lmin =
+
+ 20.
+
+-->//Unit bearing pressure Sb (N/mm2)
+
+-->Sb = 18
+ Sb =
+
+ 18.
+
+-->//Forward stroke displacement fsd (rad)
+
+-->fsd = %pi/2
+ fsd =
+
+ 1.5707963
+
+-->//Time required for the forward stroke tf (sec)
+
+-->tf = 1
+ tf =
+
+ 1.
+
+
+Screw
+
+Nominal diameter of the screw(d) = 50.000000 mm
+
+Core diameter of the screw(dc) = 42.000000 mm
+
+Lead of the screw(l) = 24.000000 mm
+
+Nut
+
+Length of the nut(L) = 72.000000 mm
+
+Mass of each ball(m) = 52.421082 kg
+
+Diameter of each ball(dia) = 239.584467 mm
+
\ No newline at end of file |