Modelling sound radiation from a baffled vibrating plate for different boundary conditions using an elementary source technique

Azma Putra, Nurain Shyafina, David Thompson, Noryani Muhammad, Mohd. Jailani Mohd Nor, Mohd. Zaki Nuawi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Analytical models of the sound radiation a rectangular plate are often based on simply supported edges for mathematical convenience. Models for other boundary conditions also exist, but mostly these employ rather complicated analytical calculations. This paper presents an analytical model of the radiation efficiency for a baffled plate using a discrete elementary source model. The model requires only the a knowledge of the spatial distribution vibration velocity of the panel and hence this surface velocity can be calculated conveniently by using the established mobility equations for different plate boundary conditions. This is then included in the discretized Rayleigh integral to calculate the radiated sound pressure to the far-field. Variability of the radiation efficiency for different forcing locations and its average value are presented here for several combinations of boundary conditions. Experimental results are presented for free and clamped edges which show reasonable agreement with the predicted results.

Original languageEnglish
Title of host publicationINTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control
PublisherAustralian Acoustical Society
ISBN (Print)9780909882037
Publication statusPublished - 2014
Event43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 - Melbourne
Duration: 16 Nov 201419 Nov 2014

Other

Other43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
CityMelbourne
Period16/11/1419/11/14

Fingerprint

boundary conditions
acoustics
radiation
rectangular plates
sound pressure
far fields
spatial distribution
vibration

Keywords

  • Baffled plate
  • Boundary conditions
  • Radiation efficiency
  • Sound radiation

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Putra, A., Shyafina, N., Thompson, D., Muhammad, N., Mohd Nor, M. J., & Nuawi, M. Z. (2014). Modelling sound radiation from a baffled vibrating plate for different boundary conditions using an elementary source technique. In INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control Australian Acoustical Society.

Modelling sound radiation from a baffled vibrating plate for different boundary conditions using an elementary source technique. / Putra, Azma; Shyafina, Nurain; Thompson, David; Muhammad, Noryani; Mohd Nor, Mohd. Jailani; Nuawi, Mohd. Zaki.

INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 2014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Putra, A, Shyafina, N, Thompson, D, Muhammad, N, Mohd Nor, MJ & Nuawi, MZ 2014, Modelling sound radiation from a baffled vibrating plate for different boundary conditions using an elementary source technique. in INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014, Melbourne, 16/11/14.
Putra A, Shyafina N, Thompson D, Muhammad N, Mohd Nor MJ, Nuawi MZ. Modelling sound radiation from a baffled vibrating plate for different boundary conditions using an elementary source technique. In INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society. 2014
Putra, Azma ; Shyafina, Nurain ; Thompson, David ; Muhammad, Noryani ; Mohd Nor, Mohd. Jailani ; Nuawi, Mohd. Zaki. / Modelling sound radiation from a baffled vibrating plate for different boundary conditions using an elementary source technique. INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 2014.
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