Effect of Contact Area on Mechanical‐Impedance Measurements
作者:
Robert Plunkett,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1964)
卷期:
Volume 36,
issue 10
页码: 1965-1966
ISSN:0001-4966
年代: 1964
DOI:10.1121/1.1919313
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The weighted average normal mechanical impedance of a circular area on an elastic half‐space does not depend markedly on the assumed pressure distribution. Its absolute value is almost independent of frequency at least until the wavelength m equal to the circumference of the circular contact area, but the loss tangent varies almost linearly with frequency up to a value of about 1 at this cutoff. These conclusions are valid only for structures large as compared with a wavelength.
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