A steel rod of length 5 m and diameter 30 mm is fixed between two rigid supports. Determine the thermal stress and change in diameter of the rod, when the temperature increases by 50 ∘C. Take Young's modulus of elasticity (Y)=2.0×106 kg/cm2, coefficient of thermal expansion (α)=12×10−6 /∘C and Poisson's ratio (ν)=0.3.

A steel rod of length 5 m and diameter 30 mm is fixed between two rigi

1.	A steel rod of length 5 m and diameter 30 mm is fixed between two rigid supports. Determine the thermal stress and change in diameter of the rod, when the temperature increases by 50 ∘C. Take Young's modulus of elasticity (Y)=2.0×106 kg/cm2, coefficient of thermal expansion (α)=12×10−6 /∘C and Poisson's ratio (ν)=0.3.
Answer» A steel rod of length $5 m$ and diameter $30 mm$ is fixed between two rigid supports. Determine the thermal stress and change in diameter of the rod, when the temperature increases by $50^{\circ} C$ . Take Young's modulus of elasticity $(Y) = 2.0 \times 10^{6} {kg/cm}^{2}$ , coefficient of thermal expansion $(α) = 12 \times 10^{- 6} /^{\circ} C$ and Poisson's ratio $(ν) = 0.3$ .

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