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Measurements and modelling of dynamic stiffness of a railway vehicle primary suspension element and its use in a structure-borne noise transmission model

Liu, Xiaowan (author)
Univ Southampton, Inst Sound & Vibrat Res, Southampton SO17 1BJ, Hants, England.
Thompson, David (author)
Univ Southampton, Inst Sound & Vibrat Res, Southampton SO17 1BJ, Hants, England.
Squicciarini, Giacomo (author)
Univ Southampton, Inst Sound & Vibrat Res, Southampton SO17 1BJ, Hants, England.
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Rissmann, Martin (author)
Vibratec, Chemin Petit Bois BP 36, F-69131 Ecully, France.
Bouvet, Pascal (author)
Vibratec, Chemin Petit Bois BP 36, F-69131 Ecully, France.
Xie, Gang (author)
CDH AG, Competence Ctr Vibrat & Acoust, D-70565 Stuttgart, Germany.
Martinez-Casas, Jose (author)
Univ Politecn Valencia, Ctr Invest Ingn Mecan, Camino Vera S-N, Valencia 46022, Spain.
Carballeira, Javier (author)
Univ Politecn Valencia, Ctr Invest Ingn Mecan, Camino Vera S-N, Valencia 46022, Spain.
Lopez Arteaga, Ines (author)
KTH,Marcus Wallenberg Laboratoriet MWL
Garralaga, Miguel A. (author)
Metro Madrid SA, Serv Ingn Mat Movil, Area Ingn, Calle Nectar 44, Madrid 28022, Spain.
Chover, Jose A. (author)
Metro Madrid SA, Serv Ingn Mat Movil, Area Ingn, Calle Nectar 44, Madrid 28022, Spain.
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Univ Southampton, Inst Sound & Vibrat Res, Southampton SO17 1BJ, Hants, England Vibratec, Chemin Petit Bois BP 36, F-69131 Ecully, France. (creator_code:org_t)
Elsevier BV, 2021
2021
English.
In: Applied Acoustics. - : Elsevier BV. - 0003-682X .- 1872-910X. ; 182
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The noise inside railway vehicles is transmitted by both structure-borne and airborne paths and, although there are many sources, the rolling noise is often the most important. This paper focuses on the structure-borne transmission of rolling noise in a metro vehicle. Measurements are presented first of the vertical and lateral dynamic stiffness of a primary suspension element consisting of conical rubber/metal elements. Results are presented for various constant preloads over the frequency range 60600 Hz. An analytical model of the suspension element is also developed, based on a mass-spring system and including wave motion within the rubber elements. The dynamic stiffness results are used in a finite element model of the running gear, consisting of the bogie frame, wheelsets and suspension elements. The excitation is provided by the combined wheel/rail roughness at the contact point. This model is used to calculate the blocked forces at the connection points between the secondary suspension elements and the car body. The blocked forces are combined with measured vibro-acoustic transfer functions from these mounting points to the vehicle interior to determine the structure-borne noise inside the vehicle. The proposed methodology is validated against measurements during operation in terms of acceleration levels, blocked forces and structure-borne noise levels inside the vehicle, showing reasonably good agreement. Including the dynamic stiffness for the primary suspension leads to improved agreement between 100 and 500 Hz compared with using a constant stiffness.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Farkostteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)

Keyword

Primary suspension
Dynamic stiffness
Structure-borne noise transmission
FE method

Publication and Content Type

ref (subject category)
art (subject category)

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