Washer To= 20 °C B 20 mm Bolt A 20 mm diameter steel rod is held snugly (without stress) between rigid walls at room temperature To = 20 °C as shown in the figure. Determine the lowest temperature...

strength of materials

Extracted text: Washer To= 20 °C B 20 mm Bolt A 20 mm diameter steel rod is held snugly (without stress) between rigid walls at room temperature To = 20 °C as shown in the figure. Determine the lowest temperature that the rod can be cooled if the allowable shear stress for the bolt at A is 45 MPa, the allowable normal stress for the rod is 75 MPa and the allowable stress in bearing for the washer is 60 MPa. The diameter of the bolt is d, = 12 mm and the diameter of the washer is d, = 25 mm. For steel E: = 200 GPa and ag = 12 x 10/°C.