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clear
//
//variable declaration
Es=(2*100000) //Young's modulus of steel rod ,N/mm^2
Ec=(1.2*100000) //Young's modulus of copper tube,N/mm^2
di=(25) //internal diameter,mm
de=(40) //external diameter,mm
As=%pi*(di**2)/4 //Area of steel rod**mm^2
Ac=%pi*((de**2)-(di**2))/4 //Area of copper tube**mm^2
P=120 //load, KN
//From equation of equilibrium, Ps+Pc=P,where Ps is the load shared by steel rod and Pc is the load shared by the copper tube.
//From compatibility condition,deltaS=deltaC
Pc=(P*1000)/(1+((As*Es)/(Ac*Ec)))
Ps=Pc*((As*Es)/(Ac*Ec))
SIC=Pc/Ac //stress in copper, N/mm^2
SIS=Ps/As //stress in steel,N/mm^2
printf("\n stress in Copper= %0.2f N/mm^2",SIC)
printf("\n stress in Steel= %0.2f N/mm^2",SIS)
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