A rod consisting of two cylindrical portions AB and BC is restrained at both ends. Portion AB is made of steel (Es = 200 GPa, αs = 11.7 × 10–6/°C) and portion BC is made of brass (Eb = 105 GPa, αb = 20.9 × 10–6/°C). Knowing that the rod is initially unstressed, determine the compressive force induced in ABC when there is a temperature rise of 50°C.
Fig. P9.41

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