Novel acoustic sources from squeezed cavities in car tires

Gagen, M. J. (1999) Novel acoustic sources from squeezed cavities in car tires. Journal of the Acoustical Society of America, 106 2: 794-801. doi:10.1121/1.427096

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Author Gagen, M. J.
Title Novel acoustic sources from squeezed cavities in car tires
Journal name Journal of the Acoustical Society of America   Check publisher's open access policy
ISSN 0001-4966
Publication date 1999-08
Year available 1999
Sub-type Article (original research)
DOI 10.1121/1.427096
Open Access Status File (Publisher version)
Volume 106
Issue 2
Start page 794
End page 801
Total pages 8
Place of publication Melville, NY, United States
Publisher A I P Publishing LLC
Collection year 1999
Language eng
Subject C1
780102 Physical sciences
240501 Acoustics and Acoustical Devices; Waves
Abstract This paper demonstrates that the partial squeezing of car tire cavities at ground impact cannot he adequately modeled by the usual acoustic wave equation. A more complete treatment must begin with the Euler equations for fluid flow in a squeezed cavity to derive a wave equation dependent on cavity wall velocities and accelerations. These can be sizable as ground impact causes the walls of a tire cavity to move with velocities of order 1 m/s and with accelerations of 10(3) m/s(2) over time scales of about 1 ms. Further, the geometry of a typical cavity is such that width compression causes significant increases in pressure and density to occur before the arrival of the rarefaction wave propagating from the open end of the cavity begins to exhaust the full length of the cavity. This causes significant departures from equilibrium density and pressure conditions. These influences are demonstrated both analytically and numerically. (C) 1999 Acoustical Society of America. [S0001-4966(99)00708-0].
Keyword Acoustics
Rolling Tires
Q-Index Code C1
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
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Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 24 times in Scopus Article | Citations
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Created: Tue, 10 Jun 2008, 13:57:43 EST