Transient acoustic radiation from excited plates
作者:
Seroj S. Mackertich,
Sabih I. Hayek,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1990)
卷期:
Volume 87,
issue 6
页码: 2551-2556
ISSN:0001-4966
年代: 1990
DOI:10.1121/1.399048
出版商: Acoustical Society of America
关键词: PLATES;NOISE;TRANSIENTS;MECHANICAL VIBRATIONS;SOUND SOURCES;TIME DEPENDENCE
数据来源: AIP
摘要:
The acoustic radiation time signature as radiated from an infinite elastic plate is obtained for transient forced excitation applied to a point on the plate. The forced excitations considered are those encountered in industrial and marine applications such as the sudden application of dead weight, an impact load, or a sinusoidal finite length pulse that could be generated by starting machinery. The solutions in these cases were idealized by use of a point force whose time history is a step function, a square pulse, or a cw pulse. The time signature for the radiated noise was obtained by convolving the approximate acoustic radiation impulse response solution for an impulsive force with the force time history.
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