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On the Estimation of the Noise Emitted by the Vibration of a Circular Plate

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 28 Issue 1 Page 97-104
published_at 1977
KJ00000156182.pdf
[fulltext] 546 KB
Title
振動円板から放射される騒音の予測
On the Estimation of the Noise Emitted by the Vibration of a Circular Plate
Creators Fukuda Motokazu
Creators Izumi Haruo
Source Identifiers
Machine noise is composed of air-borne noise, which is strictly of aerodynamic nature and which originates from openings like air-intake and exhaust, and of the noise emitted by the vibration of machine surface. The surface vibration noise caused by exciting forces depends on the transmitting or impeding characteristics of the machine structure and on the vibration characteristics of the external surface. Namely, surface vibration noise is influenced by three factors : exciting forces, mechanical transmission impedance and radiation factors. The radiation factor depends on the ratio between air-borne noise power and vibration power of the structure on its surface. Clearly, improvements in one of these three factors can lead to a reduction in overall noise. In this paper, the relation between the vibration of a circular plate clamped at the edge and the noise originated by the surface vibration are studied, and some interesting results are obtained in connection with a method to estimate the sound pressure level and the frequency characteristics of the noise by the measurement of the vibration.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1977
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部