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250 mm 300 mm A B 30-mm diameter -50-mm diameter PROBLEM 2.51 - A rod consisting of two cylindrical portions AB and BC is

250 mm 300 mm A B 30-mm diameter -50-mm diameter PROBLEM 2.51 - A rod consisting of two cylindrical portions AB and BC is restrained at both ends. Portion AB is made of steel (E, = 200 GPa, a, = 11.7x10/C) and portion BC is made of brass (E, = 105 GPa, a;= 20.9x10/C). Knowing that the rod is initially unstressed, determine the compressive force induced in ABC when there is a temperature rise of 50C. www C

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