Question: A 6061-T6 aluminum-alloy rod 4 in long is supported at one end so that its other end provides a gap of 0.002 in with the end of a yellow brass rod 6 in long supported in a like manner and in line with it. The cross-sectional area of each rod is 2 in2. It is anticipated that the rods will be subjected to a maximum temperature increase of 100°F.
a. What maximum stress will develop in each of the rods if the supports are immovable?
b. If both rods are made of aluminum alloy, what stress will develop in each of the rods?
c. If both rods are made of yellow brass, what stress will develop in each of the rods?