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Tire noise resulting from open grid bridge decks

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Date Issued:
1994
Summary:
When a vehicle crosses the grid section of an open grid bridge deck, a tonal noise is generated. The tonal character of the noise is a consequence of the periodic excitation of both the tire and the grid. The excitation comes from the interaction between the vehicle tire and the periodic grid members. In this thesis, the parameters that control the level and frequency of the generated noise are investigated, with emphasis on quantifying the contribution to the overall noise level of the noise from the tire. The work in this thesis includes both laboratory and field measurements as well as theoretical analysis based on a ring model of the tire. By determining radiated acoustic power from the tires relative to the input force, the sound pressure level radiated from the tires when they cross the open grid deck is estimated. The results of this study show that the tire is the dominant source of noise on open grid bridges and in order to reduce the overall radiated noise, the excitation of the tires by the grid must be reduced. This can be accomplished by either infilling the grid deck or designing the grid to reduce the severity of the periodic excitation force.
Title: Tire noise resulting from open grid bridge decks.
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Name(s): Gregory, Scott Andrew.
Florida Atlantic University, Degree grantor
Cuschieri, Joseph M., Thesis advisor
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Issuance: monographic
Date Issued: 1994
Publisher: Florida Atlantic University
Place of Publication: Boca Raton, Fla.
Physical Form: application/pdf
Extent: 76 p.
Language(s): English
Summary: When a vehicle crosses the grid section of an open grid bridge deck, a tonal noise is generated. The tonal character of the noise is a consequence of the periodic excitation of both the tire and the grid. The excitation comes from the interaction between the vehicle tire and the periodic grid members. In this thesis, the parameters that control the level and frequency of the generated noise are investigated, with emphasis on quantifying the contribution to the overall noise level of the noise from the tire. The work in this thesis includes both laboratory and field measurements as well as theoretical analysis based on a ring model of the tire. By determining radiated acoustic power from the tires relative to the input force, the sound pressure level radiated from the tires when they cross the open grid deck is estimated. The results of this study show that the tire is the dominant source of noise on open grid bridges and in order to reduce the overall radiated noise, the excitation of the tires by the grid must be reduced. This can be accomplished by either infilling the grid deck or designing the grid to reduce the severity of the periodic excitation force.
Identifier: 15054 (digitool), FADT15054 (IID), fau:11832 (fedora)
Collection: FAU Electronic Theses and Dissertations Collection
Note(s): College of Engineering and Computer Science
Thesis (M.S.O.E.)--Florida Atlantic University, 1994.
Subject(s): Bridges, Iron and steel--Floors
Bridges, Steel plate deck
Bridges--Noise
Tires--Noise
Held by: Florida Atlantic University Libraries
Persistent Link to This Record: http://purl.flvc.org/fcla/dt/15054
Sublocation: Digital Library
Use and Reproduction: Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU
Is Part of Series: Florida Atlantic University Digital Library Collections.