Thermal Expansion Stress

Thermal expansion stress

The Formula of Thermal Stress L-L0= alpha ^t where alpha is the coefficient of material's linear expansion. L=L0 ( 1+ alpha ^t) So, thermal stress= F/A=Y( L-L0)/L0 where Y is Young's modulus of a material.

Does thermal expansion cause shear stress?

There is no shear strain or shear deflection due to thermal expansion. Generally, thermal expansion is accompanied with mechanical deflection caused by a physical load. When both force and temperature changes are present, special care is needed when solving the problem.

13 Thermal expansion stress Images