Documents disponibles écrits par cet auteur

A new quasi-static cylindrical roller bearing model to accurately consider non-hertzian contact pressure in time domain simulations / Simon Kabus in Transactions of the ASME . Journal of tribology, Vol. 134 N° 04 (Octobre 2012) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 134 N° 04 (Octobre 2012) . - 10 p. Titre : A new quasi-static cylindrical roller bearing model to accurately consider non-hertzian contact pressure in time domain simulations Type de document : texte imprimé Auteurs : Simon Kabus, Auteur ; Michael R. Hansen, Auteur ; Ole Ø. Mouritsen, Auteur Année de publication : 2012 Article en page(s) : 10 p. Note générale : tribology Langues : Anglais (eng) Mots-clés : atigue  life  calculations;  time  domain  bearing  simulations;  reedom  frictionless  quasi-static  time  domain  cylindrical  roller  bearing  model Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The accuracy of the fatigue life calculations in rolling bearing simulations is highly dependent on the precision of the roller-raceway contact simulations. Several different methods exist to simulate these pressure distributions and in time domain bearing simulations, where many contacts need evaluation, the simple and time efficient methods are more popular, yielding erroneous life estimates. This paper presents a new six degree of freedom frictionless quasi-static time domain cylindrical roller bearing model that uses high precision elastic half-space theory to simulate the contact pressures. The potentially higher computational demand using the advanced contact calculations is addressed by preprocessing a series of contacts at different centerline approaches and roller tilt angles, which are used for interpolating contact results during time domain simulations. It is demonstrated that this new model allows for simulation of bearing misalignments, roller centrifugal forces, and flange contact induced roller tilt moments, and that the effect of these conditions is directly evaluated in a detailed fatigue life analysis. Finally, the stiffness of the bearing model is validated against existing experimental data with good correlation. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE9000134000004 [...] [article] A new quasi-static cylindrical roller bearing model to accurately consider non-hertzian contact pressure in time domain simulations [texte imprimé] / Simon Kabus, Auteur ; Michael R. Hansen, Auteur ; Ole Ø. Mouritsen, Auteur . - 2012 . - 10 p. tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 134 N° 04 (Octobre 2012) . - 10 p. Mots-clés : atigue  life  calculations;  time  domain  bearing  simulations;  reedom  frictionless  quasi-static  time  domain  cylindrical  roller  bearing  model Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The accuracy of the fatigue life calculations in rolling bearing simulations is highly dependent on the precision of the roller-raceway contact simulations. Several different methods exist to simulate these pressure distributions and in time domain bearing simulations, where many contacts need evaluation, the simple and time efficient methods are more popular, yielding erroneous life estimates. This paper presents a new six degree of freedom frictionless quasi-static time domain cylindrical roller bearing model that uses high precision elastic half-space theory to simulate the contact pressures. The potentially higher computational demand using the advanced contact calculations is addressed by preprocessing a series of contacts at different centerline approaches and roller tilt angles, which are used for interpolating contact results during time domain simulations. It is demonstrated that this new model allows for simulation of bearing misalignments, roller centrifugal forces, and flange contact induced roller tilt moments, and that the effect of these conditions is directly evaluated in a detailed fatigue life analysis. Finally, the stiffness of the bearing model is validated against existing experimental data with good correlation. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE9000134000004 [...]

Optimal bearing housing designing using topology optimization / Simon Kabus in Transactions of the ASME . Journal of tribology, Vol. 134 N° 2 (Avril 2012) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 134 N° 2 (Avril 2012) . - 09 p. Titre : Optimal bearing housing designing using topology optimization Type de document : texte imprimé Auteurs : Simon Kabus, Auteur ; Claus B. W. Pedersen, Auteur Année de publication : 2012 Article en page(s) : 09 p. Note générale : tribology Langues : Anglais (eng) Mots-clés : rolling  bearings;  bearing  fatigue  life;  load  distribution;  FE-model Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The internal load distribution in rolling bearings has a high impact on the bearing fatigue life. This study presents a method to optimize roller bearing housing design in order to maximize the bearing fatigue life by ensuring an optimal internal load distribution. An FE-model of a cylindrical roller bearing utilizing nonlinear springs in the roller modeling is presented, which is capable of simulating the bearing load distribution efficiently. The optimal load distribution is achieved by specifying the desired internal load distribution as design constraints in a topology optimization of the bearing housing design. The superiority of the method is clearly demonstrated through case studies involving a cylindrical roller bearing, where it is shown that the fatigue life is increased and the bearing housing mass and roller contact misalignment is reduced. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE9000134000002 [...] [article] Optimal bearing housing designing using topology optimization [texte imprimé] / Simon Kabus, Auteur ; Claus B. W. Pedersen, Auteur . - 2012 . - 09 p. tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 134 N° 2 (Avril 2012) . - 09 p. Mots-clés : rolling  bearings;  bearing  fatigue  life;  load  distribution;  FE-model Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The internal load distribution in rolling bearings has a high impact on the bearing fatigue life. This study presents a method to optimize roller bearing housing design in order to maximize the bearing fatigue life by ensuring an optimal internal load distribution. An FE-model of a cylindrical roller bearing utilizing nonlinear springs in the roller modeling is presented, which is capable of simulating the bearing load distribution efficiently. The optimal load distribution is achieved by specifying the desired internal load distribution as design constraints in a topology optimization of the bearing housing design. The superiority of the method is clearly demonstrated through case studies involving a cylindrical roller bearing, where it is shown that the fatigue life is increased and the bearing housing mass and roller contact misalignment is reduced. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE9000134000002 [...]