Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

The Limitation and Applicabilitity of Helmholtz Resonator, Regarding as Equivalent Single-Degree of Vibration System

1자유도 등가 진동계로 이해하는 헬름홀츠 공명기 특성의 한계점과 응용

  • 하상태 (한국과학기술원 대학원, 기계공학과) ;
  • 김양한 (한국과학기술원기계공학과)
  • Published : 1994.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Classical method calculates the resonance frequency of Helmholtz resonator by postulating that there is a moving mass in neck and a stiffness which expresses the compressibility of cavity. This has been widely accepted as reasonable to determine the resonant frequency, provided that the wave length of interest is longer that any length scale of resonater. Nevertheless, it has been often recognized that this classical method sometimes does not well predict the resonant frequency. This paper decribes the way in which the dynamics of resonator very often does care about the detail geometries of resonator; location of the neck, diameter ratio of the neck to that of cavitty, length of resonator compared with that of neck, etc. This rather unexpected observations have been proved theoretically; 3 dimensional analysis of acoustic wave equation, as well as experimentally by comparing the resonant frequencies, transmission loss, and insertion loss of resonator.

Keywords

References

  1. Journal of Sound and Vibration v.13 no.3 A Theoretical Study of Non-Linear Damping by Helmholtz Resonators Zinn,B.T.
  2. Journal of Sound and Vibration v.24 no.1 Improved Calculation of Resonant Frequencies of Helmholtz resonators Alster,M.
  3. Elements of Acoustics Samuel Temkin
  4. Journal of the Acoustical Society of America v.57 Resonant Frequencies of Cylindrical Helmholtz Resonators Panton,R.L.;Miller,J.M.
  5. Theory of Sound Ⅱ Lord Rayleigh
  6. Journal of the Acoustical Society of America v.25 no.6 On the Theory and Design of Acoustic Resonators Uno Ingard
  7. Journal of Sound and Vibration v.67 The Acoustic Inertial End Correction Pollack,M.L.
  8. 한국소음진동공학회지 v.2 no.3 두 개의 음향탐촉자를 이용한 소음기의 투과손실 측정과 오차해석 강성우;김양한
  9. Journal of the Acoustical Society of America v.94 no.1 Green's Solution of the Acoustic Wave Equation for a Circular Expansion Chamber with Arbitrary Locations of Inlet, Outlet Port and Termination Impedance Kim,Y.H.;Kang,S.W.
  10. 한국과학기술원 석사학위논문 임의의 위치에 표면 속도장을 갖는 원형 덕트 내부 음장의 일반해와 실험적 평가에 관한 연구 강성우
  11. Journal of Sound and Vibration v.52 no.3 The Effect of an Air Flow on a Single Side Branch Helmholtz Resonators in a Circular Duct Anderson,J.S.
  12. Acustica v.78 On the Inertial End Correction of Resonators Ih,J.G.