bruno mevel - Academia.edu (original) (raw)

Papers by bruno mevel

New Civil Engineer, 1990

The dynamic behavior of a single row of ball bearings is considered analytically with attention g... more The dynamic behavior of a single row of ball bearings is considered analytically with attention given to the effects of resonance and to two routes to chaos. The vertical and horizontal routes to chaos are examined, and the cascade of subharmonics and the interaction of resonances are shown to cause chaotic behavior in a perfect ball bearing.

Tribology transactions, Jul 6, 2016

ABSTRACT This article aims to study the influence of two contact methods that may be used in bear... more ABSTRACT This article aims to study the influence of two contact methods that may be used in bearing tilt analysis. This is of interest because an essential output in bearing analysis is the contact stress. The rating life of a bearing is a function of this parameter and bearing customers are usually interested in this criteria. The linear contact has long been studied using a simple Hertzian model. Time and errors are obviously opponent parameters: The Hertzian method is a fast solution but it cannot reach the accuracy of a detailed one that takes more time. In this article, a non-Hertzian method is presented in order to manage this analysis and the results are compared to those of the standard.

Journal of Sound and Vibration, Apr 1, 1993

HAL (Le Centre pour la Communication Scientifique Directe), Jun 16, 2004

Tribology transactions, Jun 3, 2019

In a previous paper [1], the theoretical prediction of a ball bearing motion was studied and diff... more In a previous paper [1], the theoretical prediction of a ball bearing motion was studied and different routes to chaos described. The aim of this paper is to study experimentally routes to chaos in a ball bearing and to observe whether theoretical predictions of the phenomena are realistic. An experimental test bench was built and a technique to observe Poincare maps is proposed. The experience clearly shows the appearance of instability in the bearing motion, and two different routes to chaos are described as expected in theory. The first route is related to the first resonant frequency of the bearing. It is a sub-harmonic route. The second route, related to the second resonant frequency, is a quasi-periodic route.Copyright © 2007 by ASME

Tribology International, May 1, 2020

This work investigates the roller skew of a tapered roller bearing. An experimental setup has bee... more This work investigates the roller skew of a tapered roller bearing. An experimental setup has been built to measure the roller skew angle in tapered roller bearings thanks to two inductive proximity sensors (IPS). Using the roller skew measured values, a numerical friction law at the rib-roller end contact is defined. In order to validate this friction model, the calculated skew angles are compared to the experimental values. The roller skew angle is calculated after the kinematic equilibrium analysis at each roller. Moreover, the effect of the load, innerraceway rotational speed, oil temperature, and lubricant type on the skew is examined.

Journal of Sound and Vibration, Dec 1, 2008

ABSTRACT The theoretical motion of a ball bearing has been studied in a previous paper. Using a c... more ABSTRACT The theoretical motion of a ball bearing has been studied in a previous paper. Using a control parameter, different routes to chaos were described. The aim of this paper is to study the experimental routes to chaos in a ball bearing and to confirm whether theoretical predictions of the phenomena are realistic.An experimental test bench has been used and a numerical procedure has been proposed for observing Poincaré maps. As the control parameter varies the bearing clearly shows the appearance of instability in its motion. Two different routes to chaos are described as expected from the theory.The first route is related to the first resonant frequency of the bearing. It is a sub-harmonic route. The second route, associated with the second resonant frequency, is a quasi-periodic route.

STLE/ASME 2008 International Joint Tribology Conference, 2008

An explicit dynamic model of a deep groove ball bearing under a radial load is proposed. All comp... more An explicit dynamic model of a deep groove ball bearing under a radial load is proposed. All components are treated as rigid bodies whereas the bearing outer ring flexibility is taken into account using fixed interface component mode synthesis (CMS). The classical lubricated Hertzian contact theory is used to calculate elastic deflections and non-linear contact forces. The dynamic loading of the outer ring interface nodes is ensured using C2-continuous rational cubic splines. A Runge-Kutta-Felhberg 4th/5th order integration scheme is used to solve the dynamic equilibrium of all components. Time and frequency domain analyses are then carried out to investigate the dynamic behaviour of the ball bearing. The accuracy of these works is validated by comparison with the results of an analytical model and a model based on finite elements proposed in prior researchs.

Le comportement dynamique d'un roulement a billes est etudie grâce a un modele theorique et a... more Le comportement dynamique d'un roulement a billes est etudie grâce a un modele theorique et a une serie d'experiences. Une des conclusions attendues, de cette etude, concernait l' influence des defauts sur les vibrations engendrees par le roulement. Mais le probleme n'est pas simple puisqu'il fait appel a la dynamique des systemes fortement non-lineaires et qu'il a ete necessaire d'utiliser des outils de la physique des phenomenes chaotiques pour comprendre les mouvements. On a decrit les routes vers le chaos, qui apparaissent en fonction de la vitesse de rotation et des caracteristiques de jeux et d'amortissement, soit par cascade de sous-harmoniques ou par mouvements quasi-periodiques. Une experimentation a permis de visualiser certaines des bifurcations prevues par la theorie. Un logiciel de simulation des vibrations de roulements a billes avec defauts geometriques des constituants a resulte de l'analyse, la confrontation a l' experimentation s'est averee excellente. L'etude a permis de montrer les effets de masque de certains defauts par rapport a d'autres et donc au stade industriel d'agir sur le procede de fabrication induisant le defaut a effet dominant.

Mécanique & industries, Apr 1, 2003

International Gear Conference 2014: 26th–28th August 2014, Lyon, 2014

Static calculations of stresses in Wind gearbox have been widely performed with only rigid assump... more Static calculations of stresses in Wind gearbox have been widely performed with only rigid assumptions. The current trend is to minimize the weight and the cost and since the structures become lighter, their flexibility is more and more important. Then it is necessary to update the calculation methods. In FEM software, a gear element is developed and tested in order to be linked to flexible components. This is possible because the input of the calculation is only the torque and the speed whereas in common methods, the gear points and the local loads are calculated separately. Examples will show that the gear element is convenient to calculate the displacements and the misalignment in planetary stages that contains bearings.

Mécanique & Industries

ABSTRACT

Le comportement dynamique d'un roulement a billes est etudie grâce a un modele theorique et a... more Le comportement dynamique d'un roulement a billes est etudie grâce a un modele theorique et a une serie d'experiences. Une des conclusions attendues, de cette etude, concernait l' influence des defauts sur les vibrations engendrees par le roulement. Mais le probleme n'est pas simple puisqu'il fait appel a la dynamique des systemes fortement non-lineaires et qu'il a ete necessaire d'utiliser des outils de la physique des phenomenes chaotiques pour comprendre les mouvements. On a decrit les routes vers le chaos, qui apparaissent en fonction de la vitesse de rotation et des caracteristiques de jeux et d'amortissement, soit par cascade de sous-harmoniques ou par mouvements quasi-periodiques. Une experimentation a permis de visualiser certaines des bifurcations prevues par la theorie. Un logiciel de simulation des vibrations de roulements a billes avec defauts geometriques des constituants a resulte de l'analyse, la confrontation a l' experimentati...

Tribology Transactions, 2016

ABSTRACT This article aims to study the influence of two contact methods that may be used in bear... more ABSTRACT This article aims to study the influence of two contact methods that may be used in bearing tilt analysis. This is of interest because an essential output in bearing analysis is the contact stress. The rating life of a bearing is a function of this parameter and bearing customers are usually interested in this criteria. The linear contact has long been studied using a simple Hertzian model. Time and errors are obviously opponent parameters: The Hertzian method is a fast solution but it cannot reach the accuracy of a detailed one that takes more time. In this article, a non-Hertzian method is presented in order to manage this analysis and the results are compared to those of the standard.

The dynamic behavior of a single row of ball bearings is considered analytically with attention g... more The dynamic behavior of a single row of ball bearings is considered analytically with attention given to the effects of resonance and to two routes to chaos. The vertical and horizontal routes to chaos are examined, and the cascade of subharmonics and the interaction of resonances are shown to cause chaotic behavior in a perfect ball bearing.

STLE/ASME 2008 International Joint Tribology Conference, 2008

An explicit dynamic model of a deep groove ball bearing under a radial load is proposed. All comp... more An explicit dynamic model of a deep groove ball bearing under a radial load is proposed. All components are treated as rigid bodies whereas the bearing outer ring flexibility is taken into account using fixed interface component mode synthesis (CMS). The classical lubricated Hertzian contact theory is used to calculate elastic deflections and non-linear contact forces. The dynamic loading of the outer ring interface nodes is ensured using C2-continuous rational cubic splines. A Runge-Kutta-Felhberg 4th/5th order integration scheme is used to solve the dynamic equilibrium of all components. Time and frequency domain analyses are then carried out to investigate the dynamic behaviour of the ball bearing. The accuracy of these works is validated by comparison with the results of an analytical model and a model based on finite elements proposed in prior researchs.

In cylindrical roller bearings subjected to complex radial and axial load, there is always a skew... more In cylindrical roller bearings subjected to complex radial and axial load, there is always a skew motion of rollers. This parasite motion increases the total friction loss within the bearings, restricting their running speed and life. The actual skew angle of a roller is attended by equilibrium of forces and moments acting on that roller, but this angle can be limited by the geometry of guiding flanges and cage pocket. In this paper, the limiting skew angle of rollers is estimated for a cylindrical roller bearing with four guiding flanges and a complex roller profile. The influence of different geometrical parameters (flange angle, threshold flange height, and roller to cage pocket radial clearance) on the limiting skew angle of roller is also presented.

Journal of Sound and Vibration, 2008

ABSTRACT The theoretical motion of a ball bearing has been studied in a previous paper. Using a c... more ABSTRACT The theoretical motion of a ball bearing has been studied in a previous paper. Using a control parameter, different routes to chaos were described. The aim of this paper is to study the experimental routes to chaos in a ball bearing and to confirm whether theoretical predictions of the phenomena are realistic.An experimental test bench has been used and a numerical procedure has been proposed for observing Poincaré maps. As the control parameter varies the bearing clearly shows the appearance of instability in its motion. Two different routes to chaos are described as expected from the theory.The first route is related to the first resonant frequency of the bearing. It is a sub-harmonic route. The second route, associated with the second resonant frequency, is a quasi-periodic route.

New Civil Engineer, 1990

The dynamic behavior of a single row of ball bearings is considered analytically with attention g... more The dynamic behavior of a single row of ball bearings is considered analytically with attention given to the effects of resonance and to two routes to chaos. The vertical and horizontal routes to chaos are examined, and the cascade of subharmonics and the interaction of resonances are shown to cause chaotic behavior in a perfect ball bearing.

Tribology transactions, Jul 6, 2016

ABSTRACT This article aims to study the influence of two contact methods that may be used in bear... more ABSTRACT This article aims to study the influence of two contact methods that may be used in bearing tilt analysis. This is of interest because an essential output in bearing analysis is the contact stress. The rating life of a bearing is a function of this parameter and bearing customers are usually interested in this criteria. The linear contact has long been studied using a simple Hertzian model. Time and errors are obviously opponent parameters: The Hertzian method is a fast solution but it cannot reach the accuracy of a detailed one that takes more time. In this article, a non-Hertzian method is presented in order to manage this analysis and the results are compared to those of the standard.

Journal of Sound and Vibration, Apr 1, 1993

HAL (Le Centre pour la Communication Scientifique Directe), Jun 16, 2004

Tribology transactions, Jun 3, 2019

In a previous paper [1], the theoretical prediction of a ball bearing motion was studied and diff... more In a previous paper [1], the theoretical prediction of a ball bearing motion was studied and different routes to chaos described. The aim of this paper is to study experimentally routes to chaos in a ball bearing and to observe whether theoretical predictions of the phenomena are realistic. An experimental test bench was built and a technique to observe Poincare maps is proposed. The experience clearly shows the appearance of instability in the bearing motion, and two different routes to chaos are described as expected in theory. The first route is related to the first resonant frequency of the bearing. It is a sub-harmonic route. The second route, related to the second resonant frequency, is a quasi-periodic route.Copyright © 2007 by ASME

Tribology International, May 1, 2020

This work investigates the roller skew of a tapered roller bearing. An experimental setup has bee... more This work investigates the roller skew of a tapered roller bearing. An experimental setup has been built to measure the roller skew angle in tapered roller bearings thanks to two inductive proximity sensors (IPS). Using the roller skew measured values, a numerical friction law at the rib-roller end contact is defined. In order to validate this friction model, the calculated skew angles are compared to the experimental values. The roller skew angle is calculated after the kinematic equilibrium analysis at each roller. Moreover, the effect of the load, innerraceway rotational speed, oil temperature, and lubricant type on the skew is examined.

Journal of Sound and Vibration, Dec 1, 2008

ABSTRACT The theoretical motion of a ball bearing has been studied in a previous paper. Using a c... more ABSTRACT The theoretical motion of a ball bearing has been studied in a previous paper. Using a control parameter, different routes to chaos were described. The aim of this paper is to study the experimental routes to chaos in a ball bearing and to confirm whether theoretical predictions of the phenomena are realistic.An experimental test bench has been used and a numerical procedure has been proposed for observing Poincaré maps. As the control parameter varies the bearing clearly shows the appearance of instability in its motion. Two different routes to chaos are described as expected from the theory.The first route is related to the first resonant frequency of the bearing. It is a sub-harmonic route. The second route, associated with the second resonant frequency, is a quasi-periodic route.

STLE/ASME 2008 International Joint Tribology Conference, 2008

An explicit dynamic model of a deep groove ball bearing under a radial load is proposed. All comp... more An explicit dynamic model of a deep groove ball bearing under a radial load is proposed. All components are treated as rigid bodies whereas the bearing outer ring flexibility is taken into account using fixed interface component mode synthesis (CMS). The classical lubricated Hertzian contact theory is used to calculate elastic deflections and non-linear contact forces. The dynamic loading of the outer ring interface nodes is ensured using C2-continuous rational cubic splines. A Runge-Kutta-Felhberg 4th/5th order integration scheme is used to solve the dynamic equilibrium of all components. Time and frequency domain analyses are then carried out to investigate the dynamic behaviour of the ball bearing. The accuracy of these works is validated by comparison with the results of an analytical model and a model based on finite elements proposed in prior researchs.

Le comportement dynamique d'un roulement a billes est etudie grâce a un modele theorique et a... more Le comportement dynamique d'un roulement a billes est etudie grâce a un modele theorique et a une serie d'experiences. Une des conclusions attendues, de cette etude, concernait l' influence des defauts sur les vibrations engendrees par le roulement. Mais le probleme n'est pas simple puisqu'il fait appel a la dynamique des systemes fortement non-lineaires et qu'il a ete necessaire d'utiliser des outils de la physique des phenomenes chaotiques pour comprendre les mouvements. On a decrit les routes vers le chaos, qui apparaissent en fonction de la vitesse de rotation et des caracteristiques de jeux et d'amortissement, soit par cascade de sous-harmoniques ou par mouvements quasi-periodiques. Une experimentation a permis de visualiser certaines des bifurcations prevues par la theorie. Un logiciel de simulation des vibrations de roulements a billes avec defauts geometriques des constituants a resulte de l'analyse, la confrontation a l' experimentation s'est averee excellente. L'etude a permis de montrer les effets de masque de certains defauts par rapport a d'autres et donc au stade industriel d'agir sur le procede de fabrication induisant le defaut a effet dominant.

Mécanique & industries, Apr 1, 2003

International Gear Conference 2014: 26th–28th August 2014, Lyon, 2014

Static calculations of stresses in Wind gearbox have been widely performed with only rigid assump... more Static calculations of stresses in Wind gearbox have been widely performed with only rigid assumptions. The current trend is to minimize the weight and the cost and since the structures become lighter, their flexibility is more and more important. Then it is necessary to update the calculation methods. In FEM software, a gear element is developed and tested in order to be linked to flexible components. This is possible because the input of the calculation is only the torque and the speed whereas in common methods, the gear points and the local loads are calculated separately. Examples will show that the gear element is convenient to calculate the displacements and the misalignment in planetary stages that contains bearings.

Mécanique & Industries

ABSTRACT

Le comportement dynamique d'un roulement a billes est etudie grâce a un modele theorique et a... more Le comportement dynamique d'un roulement a billes est etudie grâce a un modele theorique et a une serie d'experiences. Une des conclusions attendues, de cette etude, concernait l' influence des defauts sur les vibrations engendrees par le roulement. Mais le probleme n'est pas simple puisqu'il fait appel a la dynamique des systemes fortement non-lineaires et qu'il a ete necessaire d'utiliser des outils de la physique des phenomenes chaotiques pour comprendre les mouvements. On a decrit les routes vers le chaos, qui apparaissent en fonction de la vitesse de rotation et des caracteristiques de jeux et d'amortissement, soit par cascade de sous-harmoniques ou par mouvements quasi-periodiques. Une experimentation a permis de visualiser certaines des bifurcations prevues par la theorie. Un logiciel de simulation des vibrations de roulements a billes avec defauts geometriques des constituants a resulte de l'analyse, la confrontation a l' experimentati...

Tribology Transactions, 2016

ABSTRACT This article aims to study the influence of two contact methods that may be used in bear... more ABSTRACT This article aims to study the influence of two contact methods that may be used in bearing tilt analysis. This is of interest because an essential output in bearing analysis is the contact stress. The rating life of a bearing is a function of this parameter and bearing customers are usually interested in this criteria. The linear contact has long been studied using a simple Hertzian model. Time and errors are obviously opponent parameters: The Hertzian method is a fast solution but it cannot reach the accuracy of a detailed one that takes more time. In this article, a non-Hertzian method is presented in order to manage this analysis and the results are compared to those of the standard.

The dynamic behavior of a single row of ball bearings is considered analytically with attention g... more The dynamic behavior of a single row of ball bearings is considered analytically with attention given to the effects of resonance and to two routes to chaos. The vertical and horizontal routes to chaos are examined, and the cascade of subharmonics and the interaction of resonances are shown to cause chaotic behavior in a perfect ball bearing.

STLE/ASME 2008 International Joint Tribology Conference, 2008

An explicit dynamic model of a deep groove ball bearing under a radial load is proposed. All comp... more An explicit dynamic model of a deep groove ball bearing under a radial load is proposed. All components are treated as rigid bodies whereas the bearing outer ring flexibility is taken into account using fixed interface component mode synthesis (CMS). The classical lubricated Hertzian contact theory is used to calculate elastic deflections and non-linear contact forces. The dynamic loading of the outer ring interface nodes is ensured using C2-continuous rational cubic splines. A Runge-Kutta-Felhberg 4th/5th order integration scheme is used to solve the dynamic equilibrium of all components. Time and frequency domain analyses are then carried out to investigate the dynamic behaviour of the ball bearing. The accuracy of these works is validated by comparison with the results of an analytical model and a model based on finite elements proposed in prior researchs.

In cylindrical roller bearings subjected to complex radial and axial load, there is always a skew... more In cylindrical roller bearings subjected to complex radial and axial load, there is always a skew motion of rollers. This parasite motion increases the total friction loss within the bearings, restricting their running speed and life. The actual skew angle of a roller is attended by equilibrium of forces and moments acting on that roller, but this angle can be limited by the geometry of guiding flanges and cage pocket. In this paper, the limiting skew angle of rollers is estimated for a cylindrical roller bearing with four guiding flanges and a complex roller profile. The influence of different geometrical parameters (flange angle, threshold flange height, and roller to cage pocket radial clearance) on the limiting skew angle of roller is also presented.

Journal of Sound and Vibration, 2008

ABSTRACT The theoretical motion of a ball bearing has been studied in a previous paper. Using a c... more ABSTRACT The theoretical motion of a ball bearing has been studied in a previous paper. Using a control parameter, different routes to chaos were described. The aim of this paper is to study the experimental routes to chaos in a ball bearing and to confirm whether theoretical predictions of the phenomena are realistic.An experimental test bench has been used and a numerical procedure has been proposed for observing Poincaré maps. As the control parameter varies the bearing clearly shows the appearance of instability in its motion. Two different routes to chaos are described as expected from the theory.The first route is related to the first resonant frequency of the bearing. It is a sub-harmonic route. The second route, associated with the second resonant frequency, is a quasi-periodic route.