Added new codeHEADmaster

1 files changed, 42 insertions, 0 deletions

diff --git a/3864/CH2/EX2.27/Ex2_27.sce b/3864/CH2/EX2.27/Ex2_27.sce
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+clear
+//
+//
+
+//Initilization of Variables
+
+D=20 //mm //Diameter of Bolts
+Di=25 //m //internal Diameter
+t=10 //mm //Thickness of bolt
+E_s=2*10**5 //N/mm**2 //Modulus of Elasticity
+E_c=1.2*10**5 //N/mm**2 //Modulus of copper
+p=3 //mm //Pitch
+theta=30 //degree
+L_c=500 //Lengh of copper 
+L_s=600 //Length of steel
+
+//Calculations
+
+//Let P_s be the Force in each bolt and P_c be the FOrce in copper tube
+//From Static Equilibrium condition
+//P_c=2*P_s
+
+//As nut moves by 60 degree.If nut moves by 360 degree its Longitudinal movement is by 3 mm
+dell=theta*360**-1*p
+
+//From Compatibility Equaton we get
+//dell=dell_c+dell_s
+
+
+A_s=%pi*4**-1*Di**2 //mm**2 //Area of steel
+A_c=%pi*4**-1*(45**2-Di**2) //mm**2 //Area of copper
+
+//Force introduced in steel
+P_s=0.5*(2*L_c*(A_c*E_c)**-1+L_s*(A_s*E_s)**-1)**-1 //N
+P_s2=P_s*A_s**-1
+
+//Force introduced in copper     
+P_c=2*P_s*A_c**-1 //N
+
+//Result
+printf("\n Stress introduced in bolt is %0.2f  N/mm**2",P_s2)
+printf("\n stress introduced in tube is %0.2f  N/mm**2",P_c)