In class, we looked at this problem with three aluminum rods supporting thi
s 1000-
pound
beam, and found that the tensile forces were 400 pounds in rods A and C and 200 pounds in
rod B.
a.
What are the tensile forces in the rods if the temperature of all three rods is incre
ased
by 50°
F (all rods are aluminum)?
b.
What are the tensile
forces in the rods if the temperature of all three rods is increased
by 50
°F AND rod B is made of steel while rods A and C
are made of aluminum?
E(al)=10 E 6 psi
Alpha (al)= 13 E-6 1/F
E(steel)=30 E 6 psi
alpha(steel)=8E-6 1/F
Homework Answers
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In class, we looked at this problem with three aluminum rods
supporting thi
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pound...
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