Thermal Stresses

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Tensile or compressive stress may be caused by restricting thermal expansion. Thermal stress can be calculated as

σ = E ε 

   = E α dt    (1)

where

σ = stress due to temperature expansion (N/m², Pa)

E =Youngs Modulus (N/m²)

ε = strain

α = temperature expansion coefficient (m/m^oC)

dt = temperature differance (^oC)

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