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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/EX7.15.b | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '764/CH7/EX7.15.b')
| -rwxr-xr-x | 764/CH7/EX7.15.b/result7_15.txt | 70 | ||||
| -rwxr-xr-x | 764/CH7/EX7.15.b/solution7_15.sce | 36 |
2 files changed, 106 insertions, 0 deletions
diff --git a/764/CH7/EX7.15.b/result7_15.txt b/764/CH7/EX7.15.b/result7_15.txt new file mode 100755 index 000000000..257e970c2 --- /dev/null +++ b/764/CH7/EX7.15.b/result7_15.txt @@ -0,0 +1,70 @@ +-->//(Threaded Joints) Example 7.15
+
+-->//Refer Fig.7.30 on page 247
+
+-->//Vertical force acting on the rigid bracket P (kN)
+
+-->P = 10
+ P =
+
+ 10.
+
+-->//Maximum permissible shear stress in any bolt tauMax (N/mm2)
+
+-->tauMax = 50
+ tauMax =
+
+ 50.
+
+-->//Number of bolts N
+
+-->N = 4
+ N =
+
+ 4.
+
+-->//Eccentricity value when secondary shear is considered e (mm)
+
+-->e = 250
+ e =
+
+ 250.
+
+-->//Distance between two bolts dist (mm)
+
+-->dist = 100 + 100
+ dist =
+
+ 200.
+
+-->//Angle made by the secondary shear forces with the vertical theta (degree)
+
+-->theta = 45
+ theta =
+
+ 45.
+
+-->//Eccentricity value when bracket tilting is considered et (mm)
+
+-->et = 300
+ et =
+
+ 300.
+
+-->//Distance between bolts 1 and 3 from edge CC l1 (mm)
+
+-->l1 = 50 + 200
+ l1 =
+
+ 250.
+
+-->//Distance between bolts 2 and 4 from edge CC l2 (mm)
+
+-->l2 = 50
+ l2 =
+
+ 50.
+
+
+Area at the core cross-section(A) = 141.035110 mm2
+
\ No newline at end of file diff --git a/764/CH7/EX7.15.b/solution7_15.sce b/764/CH7/EX7.15.b/solution7_15.sce new file mode 100755 index 000000000..17ac33c34 --- /dev/null +++ b/764/CH7/EX7.15.b/solution7_15.sce @@ -0,0 +1,36 @@ +
+//Obtain path of solution file
+path = get_absolute_file_path('solution7_15.sce')
+//Obtain path of data file
+datapath = path + filesep() + 'data7_15.sci'
+//Clear all
+clc
+//Execute the data file
+exec(datapath)
+//Calculate the primary shear force on bolts Pshear (N)
+Pshear = (P * 1000)/N
+//Distance between bolt and centre of gravity r (mm)
+r = (((dist/2)^2) + ((dist/2)^2))^(1/2)
+//Calculate the secondary shear force on bolts Sshear (N)
+Sshear = (P * 1000 * e * r)/(4 * (r^2))
+//Calculate the resultant shear force on bolts Ps (N)
+Ps = (((Pshear + (Sshear * sind(theta)))^2) + ((Sshear * cosd(90 - theta))^2))^(1/2)
+//Calculate the resisting force set up in appropriate bolts due to bracket tilting Pt (N)
+if (l1 > l2) then
+ Pt = (P * 1000 * et * l1)/(2*((l1^2) + (l2^2)))
+else
+ Pt = (P * 1000 * et * l2)/(2*((l1^2) + (l2^2)))
+end
+//Assume the core cross-section area of the bolts to be 1mm2 A
+A = 1
+//Calculate the tensile stress sigmat (N/mm2)
+sigmat = Pt/A
+//Calculate the shear stress Stau (N/mm2)
+Stau = Ps/A
+//Calculate the maximum shear stress in the bolts tau (N/mm2)
+tau = (((sigmat/2)^2) + (Stau^2))^(1/2)
+//Calculate the actual core cross-section area of the bolts A (mm2)
+A = tau/tauMax
+//Choose proper diameter from Table 7.1
+//Print results
+printf('\nArea at the core cross-section(A) = %f mm2\n',A)
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