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1

Thermal behaviour analysis of plain journal bearing influence of oil film viscosity on the journal characteristics

Michaud P., Souchet D.

International Journal of Applied Mechanics and Engineering

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2005

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Vol. 10, no spec

239-244

EN

A numerical procedure is developped in order to analyse the " Tridimensional Thermohydrodynamic " behaviour of a bearing under static loading. The Reynolds equation, the energy equation in the film and the heat transfert equation in the solids are simultaneously solved using a Newton-Raphson procedure and the finite element modelisation. The numerical procedure developped incorporates a cavitation algorithm based on JFO model, which automatically predicts film rupture and reformation in the bearings. In the present study, the obtained results from this model are compared to experimentals results and numericals results from THD 2D model. The evolution of the thermal fields are presented and discussed. The comparisons showed that the THD 3D model with the cavitation algorithm is more performant than THD 2D model.

2

Analysis of tilting pads thrust bearings behavior lubricated by power law fluid

Souchet D., Bouyahia F., Hajjam M., El Khlifi M.

International Journal of Applied Mechanics and Engineering

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2005

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Vol. 10, no spec

297-302

EN

The numerical modeling of non-Newtonian lubricant flows in titling pads thrust bearing is developed to predict some interesting factors in industrial view point. It means parameters such as load, friction and power loss whose evaluation contributes strongly to improve the design and performances of the titling pads thrust bearing. The non-Newtonian rheological model chosen is the power law because of its large domain of use. The dynamic field is described through the resolution of the generalized Reynolds equation and the thermal effects, due to the lubricant shearing, is taken into account through a global thermal balance. The discretisation of equations is made by the finite differences scheme.

3

Non-Newtonian behavior analysis in lubrication flows

Bouyahia F., EL Khlifi M., Souchet D., Hajjam M.

International Journal of Applied Mechanics and Engineering

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2003

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Vol. 8, no spec.

121-126

EN

The working characteristics of a three-dimensional slider bearings of different shapes lubricated by a non-newtonian film, modeled as a Generalized Newtonian Fluid, are computed. The rheological models chosen in this study include Herschel-Bulkley, Bingham, power-law and Rabinowisch. The evolution of the pressure and the thermal fields, according to the lubricant characteristics, are presented and discussed. Furthermore, the hydrodynamic load and the friction coefficient are evaluated according to the fluid type and the slider bearings.

4

Connecting-rod big end bearing thermoelastohydrodynamic lubrication (TEHD) - comparison between theory and experiment

Hoang L. V., Souchet D., Bonneau D.

International Journal of Applied Mechanics and Engineering

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2002

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Vol. 7, Spec. is

231-236

EN

This paper discusses the experimental device used to investigate elastohydrodynamic behaviour of connecting-rod big end bearing models. The vaseline oil is used. After a brief introduction, a resume of the theory and experiment are presented. The presentation of experimental results is given as well as a comparison with theoretical results.