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Der Mechanismus der Geräuschentstehung beim Rollen von Kraftfahrzeugen auf benetzter Straße

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The rolling noise of vehicles on a wet road exceeds that on a dry road on the average by 10dB(A). The generating mechanism is still largely unknown. By means of laboratory-experiments with simple tyre-segments and sound pressure and vibration measurements on the rolling tyre it was found that the water droplets, that are suddenly accelerated near the leading edge of the contact patch between the tire and the road, are decisive for the noise generation arising from their acceleration.

Zusammenfassung

Die Rollgeräusche von Kraftfahrzeugen auf nasser Straße übersteigen diejenigen auf trockener Straße im Mittel um 10 dB(A). Ihre Erzeugungsursachen sind jedoch weitgehend unbekannt. Mit Hilfe von Laborexperimenten mit einfachen Reifensegmenten sowie anhand von Luft- und Körperschallmessungen an rollenden Reifen konnte festgestellt werden, daß die am Einlauf in die Kontaktzone zwischen Reifen und Fahrbahn plötzlich beschleunigten Wasserpartikel aufgrund ihres Beschleunigungsgeräusches für die Geräuschentstehung ausschlaggebend sind.

Sommaire

Les bruits de roulement des camions sur route mouillée dépassent en moyenne de 10 dB(A) ceux des mêmes camions sur route sèche. L'origine de cette différence demeurait pourtant en grande partie inconnue. Des expériences avec des segments élémentaires de pneumatiques et des mesures de sons aériens et de vibrations sur des pneus entiers en cours de roulement ont permis d'établir que la cause principale de la différence constatée provient du bruit d'accélération de particules d'eau qui se trouvent brusquement accélérees lors de la pénétration dans la zone de contact entre le pneumatique et la chaussée mouillée.
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Document Type: Research Article

Publication date: February 1, 1981

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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