Comment on "Modal Coupling in Lightly Damped Structures"

Exact and numerical responses of a plate under a turbulent boundary layer excitation

“…In fact, in that case the coupling between the models should be accounted and any uncoupled formulation, as Eq. (7), should not be pursued (Hasselman, 1976(Hasselman, , 1977Flax, 1977).…”

A scaling procedure for the response of an isolated system with high modal overlap factor

“…In fact, for high values of the damping, the coupling between the modes must be taken into account and the uncoupled formulation, as Eq. (1), should not be pursued [19][20][21]. Since the same modal base is shifted from the original frequency values to higher ones, depending on the scaling coefficient, a direct evaluation of the magnitude of the elements of the complex impedance matrix could lead to a measure of the imposed degree of coupling among the modes [19].…”

“…(28) and (29) together with the cited discussions presented in Refs. [19][20][21] are considered as a good working base.…”