Dynamic Response of Adaptive Cross-Ply Cantilevers Featuring Intelaminar Bonding Imperfections

摘要

The implications of slip-type interfacial bonding imperfections on the dynamic behavior of adaptive laminated beams wiht surface-bonded peiezoactuator layers are investigated. Numerical results are supplied, and pertinent conclusions on the free and forced flexural motions under transient distributed loading, as a function of the measure of bonding imperfections, are outlined. Near the end of this problem approach, a recently developed theory of anisotropy laminated plates that incorporates the effect of imperfect interlaminae bonding and fulfils the shear traction continuity requirements is used. The control is achieved via the action of a piezoelectricity induced bending moment at the tip of the beam, and in this context four different feedback control laws are employed. The obtained results reveal the powerful role played by the proposed control methodology toward suppressing vibrations and attenuating the detrimental effect induced by the interlaminae bonding flaws.