VIBRATIONS ANALYSIS OF MULTI-LAYERED SANDWICH COMPOSITES WITH PIEZOELECTRIC SENSOR/ACTUATOR. APPLICATION TO ANTIFOULING PROCESS

摘要

This paper is concerned with the feasibility and efficiency of vibration control of composite plates with piezopolymer actuators in antifouling process. The idea is to design an intelligent structural system that is able to protect itself against the fouling. However, this requires the modelisation of vibrations of composite plate. We use the linear theory of elasticity to analyze the steady state vibrations of a simply supported rectangular linear elastic laminated plate with bonded PVDF polymer layers. The mathematical model of a smart composite plate is formulated first, followed by vibration analysis. The active vibration control of composite plate is studied using the governing equation of motion. Numerical results for a thin plate containing bonded actuator layers are presented. The main original results on the parameters governing the modal amplitudes, and application of this study to antifouling process which evaluates the effectiveness of actively controlled piezopolymers for antifouling process, are presented.