A steel tube and a brass rod are concentrically located. their ends are fixed on both sides using rigid plates. One of these plates is fixed to the wall, the other is free. Heat is applied to the system, explain the stresses that develop in the system

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Since brass has a higher thermal expansion coefficient than steel, the brass rod will expand in length more than the steel tube. Since they are connected by a rigid plate, this will cause the brass rod to push on the plate and the steel tube to pull. The brass rod will experience compressive stresses while the steel rod experiences tensile stresses. Both will also experience thermal stresses and hoop stress if they come into contact within the steel tube. Both will also experience a bending stress caused by the weight of the rigid plate at the end.