Question

Explain thermal stress with its defination and equation

Answer 1

Thermal stress is stress caused by differences in temperature or by differences in thermal expansion. A crack formed as a result of thermal stress produced by rapid cooling from a high temperature. Because thesection of rail was fixed at both ends it experienced a thermal stress when theambient temperature increased.

Answer 2

Thermal stress is stress created by any change in temperature to a material. These stresses can lead to fracture or plastic deformation depending on the other variables of heating, which include material types and constraints.[1] Temperature gradients, thermal expansion or contraction and thermal shocks are things that can lead to thermal stress. This type of stress is highly dependent on the thermal expansion coefficient which varies from material to material. In general the larger the temperature change, the higher the level of stress that can occur.
The equation of thermal stress is:Stress = = - E a d T , where is Young's Modulus, is the coefficient of linearthermal expansion, and is the change in temperature.