From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 278/CH12/EX12.1/ex_12_1.sce | 62 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100755 278/CH12/EX12.1/ex_12_1.sce

(limited to '278/CH12/EX12.1/ex_12_1.sce')

diff --git a/278/CH12/EX12.1/ex_12_1.sce b/278/CH12/EX12.1/ex_12_1.sce
new file mode 100755
index 000000000..b625e7ceb
--- /dev/null
+++ b/278/CH12/EX12.1/ex_12_1.sce
@@ -0,0 +1,62 @@
+//desing cotter joint
+clc
+//solution
+//given
+P=30*10^3//N
+ft=50//N/mm^2
+t=35//N/mm^2
+fc=90//N/mm^2//crushing stress
+//let d be diameter of rods
+pi=3.14
+//P=A*ft
+//P=(p1/4)*d^2*ft
+d=sqrt((P*4)/(pi*ft))
+printf("the dia nof cotter jont is,%f mm\n",d)
+//let d2 be dia of spigot and t11 be thickness
+//t11=d2/4
+//P=[{(pi/4)*d2^2}-(d2*t)]*ft=26.8*d2^2
+d2=sqrt(P/26.8)//mm
+t11=d2/4//mm
+//let fc1 be induced crushing stress
+fc1=P/(d2*t11)//N/mm^2
+printf("the induced crushing stress is,%f N/mm^2\n ",fc1)
+printf("since induced stress is greater then 90 N/mm^2,therefore d2 an t are not safe limits,let us find d2 and t by substituitn fc1=90\n")
+//let d2=d21 and t=t1
+//P=d21*t1*fc
+//P=22.5*d2^2
+d21=sqrt(P/22.5)//mm
+t1=d21/4//mm
+printf("the safe values od d2 and t are ,%f mm\n,%f mm\n",d21,t1)
+//let b be width of cotter
+//P=2*b*t1*t=(2*9.12*35)*b
+b=P/(2*9.12*35)//mm
+printf("the width of cotter is,%f mm\n ",b)
+//let d4 be dia of socket collar
+//P=(d4-d2)*t1*fc
+d4=d21+(P/(t1*fc))//mm
+printf("the diametr of socket collar is,%f mm\n",d4)
+//let c be the thickness of socket collar
+//P=2*(d4-d2)*c*t
+c=P/(2*(d4-d21)*t)//mm
+printf("the thicknes of socket collar is,%f mm\n",c)
+//let a be distance from end of slot to end of the rod
+//P=2*a*d21*t
+a=P/(2*d21*t)//mm
+printf("distance from end of slot to end of the rod is,%f mm\n",a)
+
+//let d3 be dia of spigot collar
+//P=(pi/4)*[d3^2-d21^2]*fc
+//d3^2=d21^2 + (P*4)/(90*pi)
+d3=sqrt(d21^2 + (P*4)/(90*pi))//mm
+printf("dia of spigot collar is,%f mm\n",d3)
+//let T1 be thickness of spigot collar
+//P=pi*d21*T1*t
+T1=P/(pi*d21*t)//
+printf("thickness of spigot collar is,%f mm\n",T1)
+printf("let thickness of spigot collar be T1=8mm=T12")
+//let l be lengt of cotter
+T12=8//mm
+printf("the thicness of spigot colar is,%f mm\n",T12)
+l=4*d//mm
+e=1.2*d//mm
+printf("the length of cotter and e is,%f mm\n,%f mm\n",l,e)
\ No newline at end of file
-- 
cgit