Question

The composite shaft, consisting of aluminum, copper, and steel sections, is subjected to the loading shown. The cross-sectional areas of sections AB, BC   , and CD are A_AB = 0.08 in² , A_BC = 0.15 in² , and A_CD = 0.05 in² , respectively. The modulus of elasticity for each section are shown in the figure. Neglect the size of the collars at B and C.
(Figure 1)

Copper Steel Aluminum E 1010) ks Ecu 18(10)ksi E 29(10) ksi 3.50 kip1.75 kip 2.00 kip 1.50 kip 18 in12 in16 in

Part A

Determine the normal stress in section AB.

Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension.

σAB σAB =

Part B

Determine the normal stress in section BC.

Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension.

σBC σBC =

Part C

Determine the normal stress in section CD.

Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension.

σCD σCD =

Part D

Determine the displacement of end A with respect to end D.

Express your answer to three significant figures and include the appropriate units.

δA/D δA/D =

Answer 1

PART-A AB 535 C D 5 In AD