The influence of acoustic nonlinearity on absorption properties of Helmholtz resonators. Part II. Experiment

• Autorzy: Meissner M.
• Języki publikacji: EN

Abstrakty

EN

An experimental study of an effect of the acoustic nonlinearity on absorption properties of Helmholtz resonators is presented in this work. By use of the classical standing wave method the changes in the absorption coefficient and the resonators impedance were investigated at moderate and high amplitudes of incident wave. As a result of nonlinearity a high absorption at resonance frequencies was observed and then a decrease in this absorption with increasing amplitude. Measurements of the total loss resistance of resonators have indicated that a change in the resistance at high amplitudes depends strongly on resonator orifice area, the smaller area - the higher increase in the resistance. The experimental results have also shown a growth in resonators reactance which causes an increase in resonance frequency. Quite a good agreement between experimental data and the theory presented in Part I was found.

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2000
• Tom: Vol. 25, no. 2
• Strony: 175--190
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Meissner M.

• Polish Academy of Sciences Institute of Fundamental Technological Research

Bibliografia

• [1] F.J. Fahy and C. Schifield, A note on the interaction between a Helmholtz resonator and an acoustic mode of an enclosure, J. Sound Vib., 72, 3, 365–378 (1980).
• [2] H.L. Kuntz, R.A. Prydz, F.J. Balena and R.J. Gatineau, Development and testing of cabin sidewall acoustic resonators for the reduction of cabin tone levels in propfan-powered aircraft, Noise Control Engineering Journal, 37, 3, 129–142 (1991).
• [3] J.M. Mason and F.J. Fahy, The use of acoustically tuned resonators to improve the sound transmission loss of double-panel partitions, J. Sound Vib., 124, 2, 367–379 (1988).
• [4] R.A. Prydz, L.S. Wirt, H.L. Kuntz and L.D. Pope, Transmission loss of a multilayer panel with internal tuned Helmholtz resonators, J. Acoust. Soc. Amer., 87, 4, 1597–1602 (1990).
• [5] U. Ingard, On the theory and design of acoustic resonators, J. Acoust. Soc. Amer., 25, 6, 1037–1061 (1953).
• [6] D.A. Bies and O.B. Wilson, Acoustic impedance of a Helmholtz resonator at very high amplitude, J. Acoust. Soc. Amer., 29, 6, 711–714 (1957).
• [7] J. Wu and I. Rudnick, Measurements of the nonlinear tuning curves of Helmholtz resonators, J. Acoust. Soc. Amer., 80, 5, 1419–1422 (1986).
• [8] S. Czarnecki, Utilization of nonlinear properties of resonators for improving acoustic conditions in rooms, Proceedings of the 6th International Congress on Acoustics, Tokyo, Japan, 197–200 (1968).
• [9] S. Czarnecki, Nonlinear absorption properties of acoustic resonance systems [in Polish], Arch. Akustyki, 1, 4, 37–49 (1969).
• [10] M. Meissner, The influence of acoustic nonlinearity on absorption properties of Helmholtz resonators. Part I. Theory, Arch. Acoust., 24, 2, 179–190 (1999).
• [11] M. Meissner, Mechano–acoustic feedback in the case of an interaction between a sound source and a resonance system, Arch. Acoust., 8, 3, 235–248 (1983).