Question

Two steel rods each of cross sectional area 500mm2, and an aluminium alloy rod, of cross...

Two steel rods each of cross sectional area 500mm2, and an aluminium alloy rod, of cross sectional area 600 mm2 are cut to a length of 3m and attached to rigid end plates to form a composite member.

If a tensile force of 100kN is applied to the member and at the same tie the temperature of the system is lowered by 20℃, determine the force developed in each of the rods and the extension of the member.

What further extension of the member will take place if the aluminium alloy is cut?

N/mm2

N/mm2

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