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

Q: (1) A B

A: for solution refer below images.

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Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.