| People | Locations | Statistics |
|---|---|---|
| Ziakopoulos, Apostolos | Athens |
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| Vigliani, Alessandro | Turin |
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| Catani, Jacopo | Rome |
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| Statheros, Thomas | Stevenage |
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| Utriainen, Roni | Tampere |
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| Guglieri, Giorgio | Turin |
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| Martínez Sánchez, Joaquín |
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| Tobolar, Jakub |
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| Volodarets, M. |
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| Piwowar, Piotr |
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| Tennoy, Aud | Oslo |
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| Matos, Ana Rita |
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| Cicevic, Svetlana |
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| Sommer, Carsten | Kassel |
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| Liu, Meiqi |
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| Pirdavani, Ali | Hasselt |
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| Lima, Pedro | Braga |
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| Turunen, Anu W. |
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| Antunes, Carlos Henggeler |
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| Krasnov, Oleg A. |
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| Lopes, Joao P. |
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| Turan, Osman |
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| Lučanin, Vojkan | Belgrade |
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| Tanaskovic, Jovan |
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BRUNEL, Jean-François
in Cooperation with on an Cooperation-Score of 37%
Topics
- braking
- validation
- high speed train
- noise
- behavior
- vibration
- stability analysis
- wheel
- pressure
- shock absorber
- friction
- effective sound pressure
- degree of freedom
- instability
- railway network
- coefficient of friction
- simulation
- chemical element
- software
- railway traffic
- law
- transient
- metal
- cylindrical body
- consensus
- rolling contact
- cutting
- roller bearing
- metal cutting
- assessment
- modeling
- equation
- physics
- rayon
- excitation
- clutch
- modal analysis
- finite element method
- contaminant
- optimisation
- validity
- medical treatment
- noise control
- locomotive
- vibration control
- acoustic emission
- design
- railway wagon
- interface
- car wheel
- heavy haul
- show 21 more
Publications (13/13 displayed)
- 2021Thermomechanical characterization of high-speed train braking materials to improve models: Numerical validation via a comparison with an experimental braking testcitations
- 2020The critical effect of rail vertical phase response in railway curve squeal generation
- 2019Full finite element models and reduction strategies for the simulation of friction-induced vibrations of rolling contact systems
- 2019A full finite element model for the simulation of friction-induced vibrations of wheel/rail systems: application to curve squeal noise
- 2018FEM modeling of wheel-rail rolling contact with friction in an eulerian frame: results and validation
- 2018Dynamic FEM simulation of wheel-rail rolling contact with friction in an Eulerian frame - Application to curve squeal
- 2017Calcul quasi-statique et dynamique par éléments finis du contact roue/rail en présence de frottement
- 2017Modélisation par éléments finis du contact roue/rail non stationnaire dans un repère Eulérien : résultats et validation
- 2016Three-dimensional finite element model of an automotive clutch for analysis of axial vibrationscitations
- 2014Modeling squeal noise on dry automotive clutch
- 2014Modal analysis of automotive clutch using finite element method
- 2010Analysis of the attenuation of railway squeal noise by preloaded rings inserted in wheelscitations
- 2009FEA and methodology of design optimization of wheel-rail interface for heavy haul wagon wheels
Places of action
document
The critical effect of rail vertical phase response in railway curve squeal generation
Abstract
Squeal of rail-bound vehicles emitted in tight curves is characterized by high sound pressure levels at pure medium and high frequencies. Many models have been proposed in the literature to explain the occurrence of this noise with different instability mechanisms: negative damping due to falling friction or instability with a constant friction coefficient. The aim of the paper is to contribute to the understanding of the instability mechanisms in the case of a constant friction coefficient. A stability analysis of the wheel/rail contact dynamics in curve is performed by using an equivalent point contact model combined with wheel and rail modal bases. Results show that even with an assumption of a constant Coulomb friction coefficient, two types of instabilities may occur in the wheel/rail system: classical mode coupling and instabilities due to negative damping added to a single wheel mode when the track dynamical behavior, especially in the vertical direction, is included. For this second type of instabilities, an 1-degree of freedom model can be formulated. By using this model, it is found that the equivalent damper behavior of the infinite track is the origin of these instabilities.
Topics
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