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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 /278/CH11/EX11.9 | |
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initial commit / add all books
Diffstat (limited to '278/CH11/EX11.9')
| -rwxr-xr-x | 278/CH11/EX11.9/ex_11_9.sce | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/278/CH11/EX11.9/ex_11_9.sce b/278/CH11/EX11.9/ex_11_9.sce new file mode 100755 index 000000000..2ed8b2b16 --- /dev/null +++ b/278/CH11/EX11.9/ex_11_9.sce @@ -0,0 +1,32 @@ +//find size of bolt required
+clc
+//soltuion
+//given
+D=300//mm
+p=1.5//N/mm^2
+n=8
+fy=330//N/mm^2
+fe=240//n/mm^2
+//P1=1.5*P2
+Fs=2
+K=0.5
+pi=3.14
+P2=(pi/4)*D^2*p//N
+P1=1.5*P2//N
+Pmax=P1+K*P2//N
+printf("the max force on head is,%f N\n",Pmax)
+Pmax1=Pmax/n//N//load on each bolt
+Pmin=P1/n//N
+Pm=(Pmin+Pmax1)/2//N//average load
+Pv=(Pmax1-Pmin)/2//N//variable load
+printf("the mean and vaiable load acting are Pm and Pv,%f N\n,%f N\n",Pm,Pv)
+//let dc core diametr of bolt in mm
+//As=(pi/4)*dc^2//mm^2//stress area of bolt
+//fm=Pm/As=29534/dc^2//N/mm^2
+//fv=Pv/As=4220/dc^2//N/mm^2
+//acc to soderberg's formula ,
+//fv=fe[(1/Fs)-(fm/fy)]
+//4420/dc^2=240*[(1/2)-29534/(dc^2*330)]
+dc=sqrt(25700/120)//mm
+printf("the value of core dai is,%f mm\n",dc)
+printf("the standard value of core diametr is 14.933 mm fron T11.1")
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