A bar that is made of bi-material assembly is fixed at its two ends, as shown...

Transcribed Image Text:

A bar that is made of bi-material assembly is fixed at its two ends, as shown in the figure. E₁ = 100 GPa, V₁ = 0.3, and the coefficient of thermal expansion a₁ = 10 ppm/°C. E₂ = 200 GPa, V₂ = 0.3, and a₂ = 20 ppm/°C, and L₁ = 102 m and L₂ = 5x103 m. The bar has no stress at 20°C. When temperature rises to 120°C, calculate the magnitude of thermal stress (MPa) developed in the bar. E₁, α₁, V₁ L₁ + E₂, C₂, V₂ L₂ www A bar that is made of bi-material assembly is fixed at its two ends, as shown in the figure. E₁ = 100 GPa, V₁ = 0.3, and the coefficient of thermal expansion a₁ = 10 ppm/°C. E₂ = 200 GPa, V₂ = 0.3, and a₂ = 20 ppm/°C, and L₁ = 102 m and L₂ = 5x103 m. The bar has no stress at 20°C. When temperature rises to 120°C, calculate the magnitude of thermal stress (MPa) developed in the bar. E₁, α₁, V₁ L₁ + E₂, C₂, V₂ L₂ www