PDHonline
St = Pulley speed, N = S / (3.1417 * D/12) N = rpm ft-lbs Max torque, Qmax = Qmax * (D/2) / J ( Sb / 2 ) + ( Sb^2 + 4 * St^2 )^0.5 There is no tension or compression normal to the bending stress. Max torsion shear stress, St = S1 = Max shaft principal stress, S1 = An element on the shaft surface has a bending stress Sb and a shear stress St.
Lee mas