Open AccessNumerical Vibration Response of Railway Track Retrofitted with Single Degree of Freedom Rail Dampers
Author(s) -
Rafał Michalczyk,
Karol Brzeziński,
Artur Zbiciak
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/661/1/012151
Subject(s) - track (disk drive) , vibration , structural engineering , damper , noise (video) , finite element method , viscoelasticity , engineering , computer science , acoustics , mechanical engineering , physics , artificial intelligence , image (mathematics) , thermodynamics
A concept and preliminary results of numerical study of changes in the rail track dynamic characteristics are presented in the paper. Change of the characteristics is introduced in order to reduce noise emissions. The theoretical relationship between the studied track dynamic characteristics (TDR - Track Decay Rate) and noise was briefly explained, and then the methodology of FEM modelling for the standard test simulation was described. Three mass modification variants and two rail types were analyzed. Damper connection were modeled as viscoelastic joint. The rail track vibrations were analyzed in both (vertical and lateral) directions separately. Numerical study shows correlation between the railroad track mass increase and its dynamic characteristics and thus the noise emission. Applying dampers with proposed parameters results in more efficient vibration and noise mitigation in lateral direction.