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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 /3289/CH4/EX4.5/Ex4_5.sce | |
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initial commit / add all books
Diffstat (limited to '3289/CH4/EX4.5/Ex4_5.sce')
| -rwxr-xr-x | 3289/CH4/EX4.5/Ex4_5.sce | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/3289/CH4/EX4.5/Ex4_5.sce b/3289/CH4/EX4.5/Ex4_5.sce new file mode 100755 index 000000000..f785f9700 --- /dev/null +++ b/3289/CH4/EX4.5/Ex4_5.sce @@ -0,0 +1,27 @@ +clc
+
+r=0.04 //m
+t=5 //mm
+sigmae=250 //MPa
+sigmay=300 //MPa
+
+//sigmathetamax=(p*r)/t =8*p max values of tangential stresses
+//sigmathetamin=((-p/4)*r)/t =-2*p min values of tangential stresses
+//sigmazamax=(p*r)/2*t =4*p axial principal stresses
+//sigmazmin=((-p/4)*r)/2*t =-p
+
+//sigmathetaa=(sigmathetamax-sigmathetamin)/2= 5p alternating and mean stresses
+//sigmathetam=(sigmathetamax+sigmathetamin)/2= 3p
+//sigmaza=(sigmazamax-sigmazmin)/2 =2.5p
+//sigmazm=(sigmazamax+sigmazmin)/2 =1.5p
+
+//sqrt(sigmathetaa^2-sigmathetaa*sigmaza+sigmaza^2)=sigmaea
+//sqrt(sigmathetam^2-sigmathetam*sigmazm+sigmazm^2)=sigmaem
+
+//sqrt(25p^2-12.3p^2+6.25p^2)=sigmaea
+//sqrt(9p^2-4.5p^2+2.25p^2)=sigmaem solving this equation we get
+sigmaea=4.33 //p
+sigmaem=2.60 //p
+
+p=1/((sigmaea/sigmae)+(sigmaem/sigmay))
+disp(p,"the value of p in MPa is= ")
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