An explicit integration finite element method for impact noise generation at squat

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    2 Citations (Scopus)

    Abstract

    This paper presents a full finite element (FE) interaction model of wheel-track to study the wheel-rail impact noise caused by a squat. The wheel, the rail and some other track components are modeled with finite elements in three dimensions, where necessary and appropriate. Realistic contact geometry, including geometric irregularity (squat) in the contact surfaces is considered. The integration is performed in the time domain with an explicit central difference scheme. For convergence, the Courant time step condition is enforced, which, together with the detailed modeling of the structure and continuum of the wheel-track system, effectively guarantees that vibration frequency of 10 kHz or higher is reproduced. By making use of the calculated velocities and pressures on the vibrating surfaces, the boundary element method (BEM) based on Helmholtz equation is adopted to transform the vibrations of the track into acoustic signals.
    Original languageEnglish
    Title of host publicationProceedings of the 11th international workshop on railway noise (IWRN11)
    EditorsJCO Nielsen, D Anderson, PE Gautier, M Iida, JT Nelson, D Thompson, T Tielkes, DA Towers, P de Vos
    Place of PublicationDordrecht
    PublisherSpringer
    Pages63-70
    Number of pages8
    ISBN (Print)978-3-662-44831-1
    DOIs
    Publication statusPublished - 2015
    EventIWRN11 - 11th international workshop on railway noise, Uddevalla, Sweden - Dordrecht
    Duration: 9 Sep 201313 Sep 2013

    Publication series

    Name
    PublisherSpringer
    NameNotes on Numerical Fluid Mechanics and Multidisciplinary Design
    Volume126
    ISSN (Print)1612-2909

    Conference

    ConferenceIWRN11 - 11th international workshop on railway noise, Uddevalla, Sweden
    Period9/09/1313/09/13

    Keywords

    • Conf.proc. > 3 pag

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  • Cite this

    Yang, Z., Li, Z., & Dollevoet, RPBJ. (2015). An explicit integration finite element method for impact noise generation at squat. In JCO. Nielsen, D. Anderson, PE. Gautier, M. Iida, JT. Nelson, D. Thompson, T. Tielkes, DA. Towers, & P. de Vos (Eds.), Proceedings of the 11th international workshop on railway noise (IWRN11) (pp. 63-70). (Notes on Numerical Fluid Mechanics and Multidisciplinary Design; Vol. 126). Springer. https://doi.org/10.1007/978-3-662-44832-8_9