What is Thermal Stress?
Stress which is induced in a body due to change in the
temperature is known as thermal stress and the corresponding strain is called thermal strain.
the body is raised or lowered and the body is not allowed to expand or contract
freely. No stress will be induces in a body, when it is allowed to expand
or contract freely.
example a rod) which is heated to a specified temperature?
extension produced in the rod. When the rod is allowed to expand freely, the
extension produced in the rod is given by
here AB is the original length of the rod, and BB’ is the extension produced in
the rod. Suppose a compressive load P is applied at the end BB’, Due to this
compressive load, there is a decrease in the length of the rod from (L + dL) to L. Compressive stress and strain is produced in the rod and is given by
Formula of the Thermal Stress and Strain
with the supports and the rod is heated to a certain temperature, here the
extension in the rod is prevented because we have rigidly fixed it’s both the
ends. Stress and strain is setup in the rod. The stresses and strain setup in
the rod is known as thermal stresses and strains.
Stress and Strain When the Supports Yield
amount equal to the δ, then
This is all about what is thermal Stress in strength of materials. If you find anything missing or incorrect than comment us. And if find this article informative than like and share us.