Question

A steel cube, with all faces free to deform, has youngs modulus, e, poissons ratio, , and coefficient of thermal expansion, . The pressure (hydrostatic stress) developed within the cube, when it is subjected to a uniform increase in temperature, t, is given by

Answer 1

The pressure (hydrostatic stress) developed within the cube, when it is subjected to a uniform increase in temperature, t, is 0

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.

Thermal stress occur only when there is resistance to its deformation, since here its free to deform hence no thermal stress.

So its answer will be zero.