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clc;
clear;
mprintf('MACHINE DESIGN\n Timothy H. Wentzell, P.E.\n Example 4.3 Page no 68');
P=50; //[hp] Power transmitted
N=300; //[rpm] Speed
D=10; //[in] Effective pitch diameter of sprocket
d=1; //[in] Diameter of shaft from figure 4.3
Z=(%pi*d^3)/16; //[in^3] Section modulus of shaft
A=(%pi*d^2)/4; //[in^2] Area of cross section
T=(63000/N)*P; //[lb*in] Torque required to transmit power
F=T/(D/2); //[lb] Driving force in chain
Ss=F/A; //[lb/in^2] Shear stress in shaft
St=T/Z; //[lb/in^2] Torsional stress in shaft
S=Ss+St; //[lb/in^2] Resultant stress
//Note-There is mistake in addition of Ss and St.
//This value would be compared to shear stress allowable for shaft material
mprintf('\n\n The combined stress in 1 inch diameter shaft is %f lb/in^2.',S);
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