Acoustic modelling of machines using the inversion method for the purposes of the acoustic assessment of machines

• Autorzy: Pleban D.
• Konferencja: XIV International Conference Noise Control'07 (3-6.06.2007, Elbląg, Poland)
• Języki publikacji: EN

Abstrakty

EN

Issues related to the development of acoustic models of machines are important factors both in the design of low-noise machines and in the prediction of machines noise. The acoustic modelling of machines may be carried out using a set of omni-directional substitute sound sources, located in points related to the functional elements of machines. The optimal parameters of these sources may be determined using an inversion method. To calculate these parameters by using the inversion method one must know the real distribution of sound pressure around the machine. This requires the determination, on the surface of hemisphere, of both the distribution of the amplitude of sound pressures, as well as the distribution of phase shift angles between acoustic signals. Computer simulations yield optimal parameters (sound power) for the individual omni-directional sound sources. Using the calculated parameters of the substitute sources it is possible to determine the radiation characteristics and to carry the acoustic assessment of the machine.

Słowa kluczowe

EN

machinery noise; acoustic model; emission sound pressure; sound power

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2007
• Tom: Vol. 32, No. 2
• Strony: 321--327
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Pleban D.

• Central Institute for Labour Protection - National Research Institute, Czerniakowska 16, 00-701 Warszawa, Poland,

Bibliografia

• [1] ENGEL Z., PLEBAN D., STRYCZNIEWICZ L., Investigation of emission sound pressure using inversive method, Archives of Acoustics, 27, 4, 277.290 (2002).
• [2] Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC.
• [3] ENGEL Z., PIECHOWICZ J., STRYCZNIEWICZ L., Podstawy wibroakustyki przemysłowej, Akademia Górniczo-Hutnicza, Wydział Inżynierii Mechanicznej i Robotyki, Kraków 2003.
• [4] PLEBAN D., ENGEL Z., STRYCZNIEWICZ L., Investigation of emission sound pressure levels using parameters of substitute models of machines, GETS International Transaction on Acoustic Science and Engineering, 1, 47.54 (2005).
• [5] PLEBAN D., Experimental modelling and research on vibroacoustic phenomena in machines, Archives of Acoustics, 29, 2, 219.233 (2004).
• [6] EN ISO 11202 Acoustics . Noise emitted by machinery and equipment . Measurement of emission sound pressure levels at a work station and at other specified positions . Survey method in situ.
• [7] EN ISO 3746 Acoustics . Determination of sound power levels of noise sources using sound pressure. Survey method using an enveloping measurement surface over a reflecting plane.