Multi-Scale Contact Localization and Dynamic Instability Related to Brake Squeal

Autor: Van-Vuong Lai, Igor Paszkiewicz, Jean-François Brunel, Philippe Dufrénoy

Publikováno v: Lubricants, Vol 8, Iss 4, p 43 (2020)

Friction-induced vibrations (brake squeal) produced during braking applications have been one of the major problems in the transportation for many years. It can be the most troublesome for passengers because of its high frequency and acoustic pressur

Externí odkaz: https://doaj.org/article/6fdc3b6aa55b4504be8df3b4302b2cb0

Multi-scale Contact Approach Considering Material Heterogeneity and Wear

Autor: G. de Saxcé, Philippe Dufrenoy, Vincent Magnier, E. Arfa

Publikováno v: Tribology Letters. 69

A multi-scale contact method that can deal with tribological problems in a broad context is proposed. It is based on a numerical homogenization technique which allows to take into account a heterogeneous material and the generation of wear under cont

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2642ab26eeba28a2de15c480c33b660b
https://doi.org/10.1007/s11249-021-01507-w

A Full Finite Element Model for the Simulation of Friction-Induced Vibrations of Wheel/Rail Systems: Application to Curve Squeal Noise

Autor: Van Vuong Lai, Olivier Chiello, Jean-François Brunel, Philippe Dufrenoy

Publikováno v: Notes on Numerical Fluid Mechanics and Multidisciplinary Design ISBN: 9783030702885

In this paper, a method is proposed for the modeling of dynamic wheel/rail frictional rolling contact. A full finite element formulation around the stationary position in an Eulerian reference frame is derived with a fine discretization of the contac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0780c5d22c35dcc7e7c5b09011d06cf9
https://doi.org/10.1007/978-3-030-70289-2_35

Experimental set-up and the associated model for squeal analysis

Autor: Vincent Magnier, Philippe Dufrenoy, Martin Duboc, Jean-François Brunel

Publikováno v: Mechanics & Industry
Mechanics & Industry, EDP Sciences, 2020, 21 (2), pp.204. ⟨10.1051/meca/2019083⟩

Brake squeal is commonly defined at frequency upper than 1000 Hz and occurs if the system has a very high amplitude mechanical vibration with sound pressure level above 120 dB. Many studies are devoted to this problem and many of recent ones show tha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a78f425b8a3e2328ab7a738e32aa23c
https://hal.archives-ouvertes.fr/hal-02500416

The critical effect of rail vertical phase response in railway curve squeal generation

Autor: Jean-François Brunel, Van-Vuong Lai, Olivier Chiello, Philippe Dufrenoy

Publikováno v: International Journal of Mechanical Sciences
International Journal of Mechanical Sciences, Elsevier, 2020, 23 p. ⟨10.1016/j.ijmecsci.2019.105281⟩
International Journal of Mechanical Sciences, 2020, 167, 23 p. ⟨10.1016/j.ijmecsci.2019.105281⟩

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 instabil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7865ca14c9da6173049d908e3f83fa6c
https://hal.archives-ouvertes.fr/hal-02362786