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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)
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