A steel [E = 200 GPa; ν = 0.3; α = 11.3 ×10-6/°C] plate has…

A steel [E = 200 GPa; ν = 0.3; α = 11.3 ×10-6/°C] plate has a rectangular hole at its center and four circular holes at the corners. At an initial temperature of Ti = –23°C, the plate is 95 mm wide, 135 mm long, and 17 mm thick. The rectangular hole is 30 mm wide and 70 mm long. The circular holes have a diameter of 18 mm. At a final temperature of Tf = 41°C, determine the diameter of the circular holes.

Axial loads are applied with rigid bearing plates to the sol…

Axial loads are applied with rigid bearing plates to the solid cylindrical rods. One load of P = 90 kN is applied to the assembly at A, two loads Q = 50 kN are applied at B, and two loads R = 170 kN are applied at C. Determine the total change in length of the assembly.L1 = 0.28 m, E1 = 196 GPa, A1 = 0.0012 m2L2 = 0.40 m, E2 = 212 GPa, A2 = 0.0004 m2L3 = 0.36 m, E3 = 108 GPa, A3 = 0.0016 m2