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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 /1835/CH11/EX11.11/Ex11_11.sce | |
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initial commit / add all books
Diffstat (limited to '1835/CH11/EX11.11/Ex11_11.sce')
| -rwxr-xr-x | 1835/CH11/EX11.11/Ex11_11.sce | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/1835/CH11/EX11.11/Ex11_11.sce b/1835/CH11/EX11.11/Ex11_11.sce new file mode 100755 index 000000000..ac8fe367e --- /dev/null +++ b/1835/CH11/EX11.11/Ex11_11.sce @@ -0,0 +1,32 @@ +//CHAPTER 11 ILLUSRTATION 11 PAGE NO 297
+//TITLE:VIBRATIONS
+//FIGURE 11.19
+clc
+clear
+//===========================================================================================
+//INPUT DATA
+PI=3.147
+g=9.81// ACCELERATION DUE TO GRAVITY IN N /m^2
+E=210*10^9// YOUNGS MODUKUS OF SHAFT MATERIAL IN Pascals
+D=.18// DIAMETER OF SHAFT IN m
+L=2.5// LENGTH OF SHAFT IN m
+M1=25// MASS ACTING AT E IN Kg
+M2=50// MASS ACTING AT D IN Kg
+M3=20// MASS ACTING AT C IN Kg
+W1=M1*g
+W2=M2*g
+W3=M3*g
+L1=.6// LENGTH FROM A TO E IN m
+L2=1.5// LENGTH FROM A TO D IN m
+L3=2// LENGTH FROM A TO C IN m
+w=1962// SELF WEIGHT OF SHAFT IN N
+//==========================================================================================
+I=PI*D^4/64// MOMENT OF INERTIA OF SHAFT IN m^4
+DELTA1=W1*L1^2*(L-L1)^2/(3*E*I*L)// STATIC DEFLECTION DUE TO W1
+DELTA2=W2*L2^2*(L-L2)^2/(3*E*I*L)// STATIC DEFLECTION DUE TO W2
+DELTA3=W3*L3^2*(L-L3)^2/(3*E*I*L)// STATIC DEFLECTION DUE TO W3
+DELTA4=5*w*L^4/(384*E*I)// STATIC DEFLECTION DUE TO w
+Fn=.4985/(DELTA1+DELTA2+DELTA3+DELTA4/1.27)^.5
+Nc=Fn*60// CRITICAL SPEED OF SHAFT IN rpm
+//========================================================================================
+printf('CRITICAL SPEED OF SHAFT = %.3f rpm',Nc)
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