Abstract
A procedure using the dynamic Green's functions was proposed to suppress the transverse vibration of a symmetric cross-ply laminated composite beam excited by an external harmonic force. This was achieved by attaching a set of properly chosen masses and/or translational and rotational grounded springs at arbitrary selected locations along the beam. A scheme was proposed for choosing the optimal values of the added masses and the stiffness of the springs and their locations along the beam to confine the vibration in a certain chosen region. Beams with different boundary conditions, such as pinned-pinned, fixed-fixed, cantilever, free-free, simply-clamped, and simply-free beams, are considered. Other unconventional boundary conditions can be treated as well.