The 2014-T6 aluminum rod AC is reinforced with the firmly bonded A992 steel tube BC. When no load is applied to the assembly, the gap between end C and the rigid support is 0.5 mm. Determine the support reactions when the axial force of 400 kN is applied.

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"A 400 mm 400 kN 1B A992 steel 800 mm 50 mm 2014-T6 aluminum alloy 25 mm Section a-a