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Mechanical Engineers Data Handbook.pdf

Abstract

j J k K KE K , 1 L rn SOFTbank E-Book Center Tehran, Phone: 66403879,66493070 For Educational Use. STRENGTHS OF MATERIALS 3 M and torque T, the maximum direct and shear stresses, a, and 7,,, are equal to those produced by 'equivalent' moments M e and T, where 5, = T,/Z, and a , = M,/Z where Z , = polar modulus T, = ,/m and M e = (M + T,)/2 nD3 K ( D 4 -d 4 ) Z=-(solid shaft) or -~ (hollow shaft) 32 32