Vibro-acoustic response analysis of fractional railpads in frequency domain

• Ali Hosseinkhania ^[1] ; Davood Younesian ^[1] ; Rezgar Shakeri ^[2] ; Saman Farhangdoust ^[3]
  1. [1] Iran University of Science and Technology

     Iran University of Science and Technology

     Irán

     
  2. [2] University of Colorado Boulder

     University of Colorado Boulder

     Estados Unidos

     
  3. [3] Florida International University

     Florida International University

     Estados Unidos

     

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• Localización: Mechanics based design of structures and machines, ISSN 1539-7734, Vol. 49, Nº. 2, 2021, págs. 286-303
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Frequency response of a railway track including fractional railpad is studied in this paper. Fractional finite ele1ment formulation is derived for a compound model including the rail, sleepers, and ballast. The fractional equations of motion are solved by fractional interpretation of the Newmark method. Based on the Rayleigh integral approach, acoustic pressure distribution around the beam is obtained. A parametric study is carried out and effects of different parameters on the frequency spectrum of displacement, stress and sound pressure level are investigated. It is found that the frequency responses are remarkably influenced by the fractional parameters in mid frequency range.