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clc
//
//Variable declaration
T=4.60*(10**3) // Torque(N.m)
L=1.2 // length(m)
G=77*(10**9) // modulus of rigidity(Pa)
J=614*(10**-9) // Polar moment of inertia(m**4)
phy=8.50
c=25*(10**-3) // radius(m)
//Calculation
// Case(a)
phyl=((T*L)/(J*G))*(360/(2*(%pi))) // Lateral twist(degree)
phyp=phy-phyl // Permanent twist(degree)
// Case(b)
Tlmax=((T*c)/(J))/((10**6)) // Residual stresses(MPa)
// Result
printf("\n Case(a): Permanent twist = %1f degree' ,phyp)
printf("\n Case(b): Residual stress = %1f MPa ' ,Tlmax)
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