Subject: Materials Engineering/Chemical Engineering (2018)

(a) Post AC is made of steel has a diameter of 18mm, and BD is made of copper and has a diameter of 42mm (Figure 3 ). Determine i. The displacement of A(A) and B(B) ii. The displacement of point E on the rigid beam AB. E( steel )=200GPa,E( copper )=120GPa. Unit: mm,kN Figure 3