CONTROL OF CANTILEVER VIBRATION VIA STRUCTURAL TAILORING AND ADAPTIVEMATERIALS

A dual approach integrating structural tailoring and adaptive material s technology and designed to control the dynamic response of cantileve r beams subjected to external excitations is presented. Whereas struct ural tailoring uses the anisotropy properties of advanced composite ma terials, adaptive materials technology exploits the actuating capabili ties of piezoelectric materials bonded or embedded into the host struc ture, A control law relating the piezoelectrically induced boundary be nding moment with the velocity at given points of the structure is imp lemented and its effect on the closed-loop frequencies and dynamic res ponse to harmonic excitations is investigated. The combination of stru ctural tailoring and control by means of adaptive materials proves ver y effective in damping out vibration.