Following the classical representation, Structural Dynamic problems appear when elastic and inertia forces are interacting, without the presence of aerodynamic forces. Despite dynamic aspects are part of the more general aeroelastic topics investigated under ASDL lab, it is possible to find specific problems dominated by only the structural dynamic aspects. This is the case for example of structural identification, numerical experimental correlation and finally modal updating. Finally, another very challenging discipline can be recognized, generally known as health monitoring, but specifically based on the change of structural dynamic properties due to the presence of damages.