A rod made of 2014-T6 aluminum fits securely between its fixed supports A and B when the temperature is T1= 70 °F. An axial force of P is applied to the rigid collar as shown when the temperature becomes T2= –10 °F. The diameter of the solid rod is 0.5 inch. The elastic modulus of 2014-T6 aluminum is 10.6×103 ksi, the linear coefficient of thermal expansion is 12.8 ×10-6 /°F. Assume, P = 1800 lb. A) The reactive axial load at the fixed support B is _______ kip. .935 .647 1.22 1.65 1.44 B) The axial stress on the cross-section of the aluminum rod between A and C is _______ ksi. 19.0 7.42 14.0 22.3 16.5 C) The contraction in the aluminum rod between C and B is ________ ×10-3 inch when both the thermal stress and the axial loading effects are considered. 3.59 3.06 2.66 1.73 2.26

A rod made of 2014-T6 aluminum fits securely between its fixed supports A and B when the temperature is T₁= 70 °F.  An axial force of P is applied to the rigid collar as shown when the temperature becomes T₂= –10 °F. The diameter of the solid rod is 0.5 inch. The elastic modulus of 2014-T6 aluminum is 10.6×10³ ksi, the linear coefficient of thermal expansion is 12.8 ×10^-6 /°F. Assume, P = 1800 lb.

A) The reactive axial load at the fixed support B is  _______ kip. 

• .935
• .647
• 1.22
• 1.65
• 1.44

B) The axial stress on the cross-section of the aluminum rod between A and C is _______ ksi.

• 19.0
• 7.42
• 14.0
• 22.3
• 16.5

C) The contraction in the aluminum rod between C and B is ________ ×10^-3 inch when both the thermal stress and the axial loading effects are considered.

• 3.59
• 3.06
• 2.66
• 1.73
• 2.26