Thermal Stress

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

thermal stressThermal stress is the change in the temperature of the material that causes expansion or contraction.  The change in length is porportional to the amount of heat applied.


Thermal stress formulas

\(\large{ \sigma_t = a \; l_i \; \Delta T }\)   
\(\large{ \sigma_t = - E \; \alpha \; \Delta T }\)   
\(\large{ \sigma_t = E \; \epsilon }\)   


\(\large{ \sigma_t }\)  (Greek symbol sigma) = thremal stress

\(\large{ l_i }\) = initial length of material

\(\large{ \epsilon }\)  (Greek symbol epsilon) = strain

\(\large{ \Delta T }\) = temperature differential

\(\large{ \alpha }\)  (Greek symbol alpha) = thermal expansion coefficient

\(\large{ E }\) = Young's modulus


Tags: Equations for Thermal Conductivity Equations for Strain and Stress