A steel rod of 15-mm diameter is held snugly (but without any initial stresses) between rigid walls by the arrangement shown in the figure. (For the steel rod, use α =12 × 106 / °C and E = 200 GPa.)
(a) Calculate the temperature drop ΔT (degrees Celsius) at which the average shear stress in the 12-mm diameter bolt becomes 45 MPa.
(b) What are the average bearing stresses in the bolt and clevis at A and the washer (dw = 20 mm) and wall (twall = 18mm) at B?

Transcribed Image Text:

Washer, dy 20 mm 12-mm diameter bolt AT 15 mm 18 mm Clevis, 10 mm