Problem 2
The composite bar consists of a 20-mm-diameter steel ($E = 200$ GPa, segment $AB$) and 50-mm-diameter brass ($E = 101$ GPa, segments $DA$ and $BC$). A total of 150 kN is applied at $A$, and a total of 200 kN is applied at $B$, as shown in the figure. Determine the displacement of $A$ with respect to $B$ due to the applied load.
-250 mm-
50 mm
500 mm
+250 mm-
20 mm
75 kN 100 kN,
D
A
75 kN 100 kN B
C