Effect of mounting constraints on the response of piezoelectric disks
作者:
D. B. Bogy,
R. T‐K. Su,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1983)
卷期:
Volume 73,
issue 6
页码: 2210-2215
ISSN:0001-4966
年代: 1983
DOI:10.1121/1.389546
出版商: Acoustical Society of America
数据来源: AIP
摘要:
An experimental investigation was conducted to determine the effects of different edge conditions and face mount backing conditions on the electrical response of strongly coupled piezoelectric disks with electroded faces on which spatially nonuniform forces are applied by a pencil lead breaking mechanism. Various mounting schemes were employed to simulate traction‐free, simply supported, and fixed edge conditions. The response was found to be relatively insensitive to changes in the edge conditions. Experiments were also conducted on a commercially available transducer in various stages of dismantlement. It was revealed that the main structural element for controlling the electrical output was the impedance matched backing that is epoxied to the inner face of the crystal. It was concluded that mathematical models for characterizing transducers subject to nonuniform face loadings can incorporate the analytically most convenient edge conditions but must also include a suitable model for the backing.
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