어드미턴스를 이용한 압전 션트 구조물의 설계방법과 O.D.D 메인 베이스로의 응용

초록

In this paper, the design of damped structures associated with the piezoelectric shunt circuits is undertaken and it is applied to optical disk (O.D.D) main base in order to reduce unwanted vibration. In order to design effective piezoelectric structure, the admittance can be calculated by commercial finite elements program. To verify the admittance calculated by F.E.M, admittance measurement is performed by impedance analyzer. In this verifying process, the validity of the finite element admittance analysis is found. As a practical approach, to reduce the vibration of the O.D.D. main base, piezoelectric shunt system is designed using the proposed admittance analtsis and shunt effect is evaluated at all prescribed frequencies