압전재료를 이용한 복합재료 평판 구조물의 음향파워 억제

Suppression of Sound Radiation from Composite Plate Structures Using Piezoelectric Materials

  • 윤기원 (서울대학교, 항공우주공학과) ;
  • 김승조 (서울대학교, 항공우주공학과)
  • 발행 : 1996.12.01

초록

The goal of current research is to suppress the acoustic noise radiated from vibration of composite plate structure. The induced noise can be reduced through the control of the corresponding structural vibration modes by using the piezoelectric materials as actuator. The acoustic fields are to be analyzed through the boundary element method (BEM) based on the Rayleigh intergral equation and structural system through the finite element method (FEM). The suppression of rediated sound is studied by adaping the piezoelectric material as the distributed actuator. Numerical results are presented on the sound radiation from composite plate of arbitrary boundary conditions, the noise reduction adapting the piezoelectric materials as distributed actuator. The results show the effectiveness and possibility of piezoelectric actuator in the control of sound radiation from composite structure.

키워드

참고문헌

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