Add the Thermal Expansion subnode to a constraint (
Fixed Constraint or
Prescribed Displacement, or to
Fixed Constraint, Interface or
Prescribed Displacement, Interface) to prescribe a deformation of the constrained boundary caused by changes in temperature of the surroundings. This makes it possible to reduce the stresses caused by such boundary conditions.
Physics tab with Fixed Constraint,
Fixed Constraint, Interface,
Prescribed Displacement, or
Prescribed Displacement, Interface node selected in the model tree: