A hybrid model for prediction of ground-borne vibration due to discrete wheel/rail irregularities

A hybrid model for the prediction of ground-borne vibration due to discrete wheel and rail irregularities, such as wheel flats, dipped welds and insulated rail joints, is presented. The hybrid model combines the simulation of vertical wheel-rail contact force in the time domain, accounting for parametric excitation due to sleeper periodicity and impact excitation induced by loss of wheel-rail contact, and calculation of ground-borne vibration in the frequency-wavenumber domain considering a layered soil model. The model is demonstrated by investigating the influence of wheel flat size and vehicle speed on maximum vertical wheel-rail contact force and free field ground vibration. It is shown that magnitudes of impact load and ground vibration are increasing with increasing wheel flat length (and depth), but the influence of vehicle speed is not as evident. Higher vehicle speeds often lead to loss of wheel-rail contact and severe impact loads but the frequency content of such impact loads is shifted to higher frequencies which may be less significant for ground vibration.

[1]  Jens C. O. Nielsen,et al.  VERTICAL DYNAMIC INTERACTION BETWEEN TRAIN AND TRACK INFLUENCE OF WHEEL AND TRACK IMPERFECTIONS , 1995 .

[2]  Jens C. O. Nielsen,et al.  Out-of-round railway wheels , 2009 .

[3]  Geert Lombaert,et al.  Ground-Borne Vibration due to Railway Traffic: A Review of Excitation Mechanisms, Prediction Methods and Mitigation Measures , 2015 .

[4]  T. X. Wu,et al.  A hybrid model for the noise generation due to railway wheel flats , 2002 .

[5]  Lutz Auersch,et al.  Ground vibration due to railway traffic—The calculation of the effects of moving static loads and their experimental verification , 2006 .

[6]  Nils-Erik Wiberg,et al.  Wave Propagation Related to High-Speed Train - a Scaled Boundary FE-approach for Unbounded Domains , 2002 .

[7]  D. C. Rizos,et al.  A 3D BEM-FEM methodology for simulation of high speed train induced vibrations , 2005 .

[8]  Jens C. O. Nielsen,et al.  Out-of-round railway wheels—wheel-rail contact forces and track response derived from field tests and numerical simulations , 2003 .

[9]  Johan Jergeus.  Railway Wheel Flats. Martensite Formation, Residual Stresses, and Crack Propagation , 1998 .

[10]  Chris Jones,et al.  Ground vibration generated by a harmonic load acting on a railway track , 1999 .

[11]  Geert Lombaert,et al.  The experimental validation of a numerical model for the prediction of railway induced vibrations , 2006 .

[12]  Pedro Galvín,et al.  Fully three-dimensional analysis of high-speed train–track–soil-structure dynamic interaction , 2010 .

[13]  Yeong-Bin Yang,et al.  A 2.5D finite/infinite element approach for modelling visco‐elastic bodies subjected to moving loads , 2001 .

[14]  Nils-Erik Wiberg,et al.  Adaptive Solid Wave Propagation - Influences of Boundary Conditions in High-Speed Train Applications , 2003 .

[15]  Lutz Auersch,et al.  The excitation of ground vibration by rail traffic: theory of vehicle–track–soil interaction and measurements on high-speed lines , 2005 .

[16]  Jens C. O. Nielsen,et al.  The influence of contact modelling on simulated wheel/rail interaction due to wheel flats , 2014 .

[17]  Andrei V. Metrikine,et al.  Stability of a two-mass oscillator moving on a beam supported by a visco-elastic half-space , 2005 .

[18]  Anders Karlström,et al.  An analytical model for train-induced ground vibrations from railways , 2006 .

[19]  X Sheng,et al.  Modelling ground vibration from railways using wavenumber finite- and boundary-element methods , 2005, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences.

[20]  Hem Hunt,et al.  A three-dimensional tunnel model for calculation of train-induced ground vibration , 2006 .

[21]  Chris Jones,et al.  A theoretical model for ground vibration from trains generated by vertical track irregularities , 2004 .

[22]  G. Lombaert,et al.  A 2.5D coupled FE-BE methodology for the dynamic interaction between longitudinally invariant structures and a layered halfspace , 2010 .

[23]  Nuthnapa Triepaischajonsak.  The influence of various excitation mechanisms on groundvibration from trains , 2012 .

[24]  David Thompson,et al.  Railway Noise and Vibration: Mechanisms, Modelling and Means of Control , 2008 .

[25]  Rui Calçada,et al.  Influence of soil non-linearity on the dynamic response of high-speed railway tracks , 2010 .

[26]  Geert Lombaert,et al.  A Comparison of Predicted and Measured Ground Vibrations due to High Speed, Passenger, and Freight Trains , 2012 .

[27]  D. Thompson,et al.  A comparison of a theoretical model for quasi-statically and dynamically induced environmental vibration from trains with measurements , 2003 .

[28]  H. Grundmann,et al.  Nonlinear interaction between a moving vehicle and a plate elastically mounted on a tunnel , 2008 .

[29]  R. Clough,et al.  Dynamics Of Structures , 1975 .

[30]  P. Huber,et al.  Reducing train-induced ground-borne vibration by vehicle design and maintenance , 2015 .

[31]  J. Nielsen.  High-frequency vertical wheel-rail contact forces-Validation of a prediction model by field testing , 2008 .

[32]  Christian Madshus,et al.  HIGH-SPEED RAILWAY LINES ON SOFT GROUND: DYNAMIC BEHAVIOUR AT CRITICAL TRAIN SPEED , 2000 .