Optimizing Components in the Rail Support System for Dynamic Vibration Absorption and Pass-By Noise Reduction
Paper i proceeding, 2024

The rail pad stiffness is central in the conflict of interest between reducing airborne noise or track loads. Slab tracks typically have a low rail pad stiffness. This study explores two-stage elastic rail supports for slab tracks as a means to reduce noise while not increasing the track loads and hence ground vibrations. In a time-domain simulation, track forces and noise radiation are compared for several setups with parametrized rail support components. The results show that (I) the rail pad stiffness is the major lever for adjusting the radiated sound power, (II) the lower stiffness is important for adjusting the rolling contact forces and load on the track components, and (III) that optimizing for a lower sound power generally produces higher rolling contact forces.

Slab track

2.5D

Discrete coupling

Waveguide FE

Moving Green's functions

Two-stage elastic support

Wavenumber BE

Författare

Jannik Theyssen

Chalmers, Arkitektur och samhällsbyggnadsteknik, Teknisk akustik

Astrid Pieringer

Chalmers, Arkitektur och samhällsbyggnadsteknik, Teknisk akustik

Wolfgang Kropp

Chalmers, Arkitektur och samhällsbyggnadsteknik, Teknisk akustik

Lecture Notes in Mechanical Engineering

21954356 (ISSN) 21954364 (eISSN)

Vol. Noise and Vibration Mitigation for Rail Transportation Systems 673-681
978-981-99-7852-6 (ISBN)

International Workshop on Railway Noise (IWRN)
Shanghai, China,

Driving research and innovation to push Europe's rail system forward (IN2TRACK3)

Europeiska kommissionen (EU) (EC/H2020/101012456), 2021-01-01 -- 2023-12-31.

Trafikverket (2021/19114), 2021-01-01 -- 2023-12-31.

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Ämneskategorier

Teknisk mekanik

Beräkningsmatematik

Farkostteknik

Strömningsmekanik och akustik

DOI

10.1007/978-981-99-7852-6_64

ISBN

[9789819978519]

Mer information

Senast uppdaterat

2024-07-30