At a given section a shaft is subjected to a bending stress of 30 MN/m2 and a shear stress of 60 MN/m2. Determine: (a) the principal stresses; (b) the directions of the principal planes; (c) the maximum shear stress and the planes

When a steel rod below is subjected to torque (T = 1 kN · m) and bending moment (M = 4 kN · m) simultaneously, calculate equivalent stresses using Tresca's theory and Von-Mises' theory 2. M M 50mm

Q2(c) The steel alloy shaft having a diameter of 38 mm is used to transmit torque, T as shown in Figure Q2(c). If the allowable shear stress of the shaft is 80kPa, i)Determine the maximum torque T that can be transmitted by the shaft. ii)What would be the maximum torque T' if a 25 mm diameter hole is bored through the shaft? Figure Q2(c.) |Q2 c) (i) T c The torsion formula :7 = J Т (0.019) T (0.019)^4 ; Therefore, the max torque T = x10 Nm 80 2 Q2 c) (ii) For point lying on the outside suurface of the shaft: x10 ="(0.019) * (0.019*-0.0125 ) ; Therefore the max torque T' Nm 80 2 Q2 c) (iii) The shear stress at point located at inner surface of shaft, T'c T = -= J ) (0.0125) = 7 (0.019*-0.01254) T'c kPa 4. 2 2.