Sound Radiation Characteristics of A Cracked Rectangular Vibrating Plate

균열을 갖는 직사각형 진동평판의 음향 방사특성

  • 김태진 (인하대학교 대학원 기계공학과) ;
  • 박종환 (인하대학교 대학원 기계공학) ;
  • 이우식 (인하대학교 기계공학과)
  • Published : 2003.09.01

Abstract

This paper considers the sound radiation characteristics of a cracked rectangular vibrating plate, varying the orientation angle of a line crack. The vibration response of the cracked vibrating plate is obtained by using ANSYS, the acoustic theory based on the lumped parameter model is used to calculate radiated sound power. The radiated sound powers are computed with varying the orientation angle of the crack: i.e, 0$^{\circ}$, 45$^{\circ}$, and 90$^{\circ}$. It is found that characteristics of the radiated sound power are very closely related to the crack orientation, vibration mode and crack location.

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