The tie bar shown in Figure 1.39 consists of a steel core 25 mm in diameter on to which is cast an aluminium outer case of outer diameter 40 mm. The compound section is 1.5 m long and carries a...

The tie bar shown in Figure 1.39 consists of a steel core 25 mm in diameter on to which is cast an aluminium outer case of outer diameter 40 mm. The compound section is 1.5 m long and carries a tensile load of 30 kN. The load is applied to the protruding steel core as shown below.

Find

the stress in the two materials in the compound section,

For steel, E =200 GN m^-2
and for aluminium, E90 GN m^-2