The figure shows an aluminum bar of dimensions 30 millimeters by 24 millimeters  sandwiched between copper bars of dimensions 30 millimeters by 12 millimeters above and below it. The bars are held in place by pins on either end.

After the temperature of the assembly has increased by 65°C:

a) Determine the internal axial force in the aluminum bar.

b) Determine the normal strain in the copper bars.

c) Determine the shear stress in the 11-mm diameter pins.



Finished