The rigid bar ABCD of negligible weight is initially horizontal, and the steel rods attached at A and C are stress-free. If the temperature is dropped to −40°F and the 20-kip load is then applied, determine the stress in each steel rod at A and C Use E=29x106 psi and ∝=6.5x10−6/° F for steel.

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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.