WorldCat Identities

Raous, M.

Overview
Works: 35 works in 48 publications in 3 languages and 370 library holdings
Genres: Conference papers and proceedings 
Roles: Editor, Author, Thesis advisor, Opponent, Organizer of meeting, 958, Publishing director
Classifications: TA418.72, 620.11292
Publication Timeline
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Most widely held works by M Raous
Friction and instabilities by Advanced Summer School on "Friction and Instabilities"( Book )

4 editions published in 2002 in English and held by 105 WorldCat member libraries worldwide

The book addresses instability and bifurcation phenomena in frictional contact problems. The treatment of this subject has its roots in previous studies of instability and bifurcation in elastic, thermoelastic or elastic-plastic bodies, and in previous mathematical, mechanical and computational studies of unilateral problems. The salient feature of this book is to put together and develop concepts and tools for stability and bifurcation studies in mechanics, taking into account the inherent non-smoothness and non-associativity (non-symmetry) of unilateral frictional contact laws. The mechanical foundations, the mathematical theory and the computational algorithms for such studies are developed along six chapters written by the lecturers of a CISM course. Those concepts and tools are illustrated not only with enlightening academic examples but also with some demanding industrial applications, related, namely, to the automotive industry
Contact mechanics by M Raous( Book )

9 editions published in 1995 in English and held by 87 WorldCat member libraries worldwide

Mathematical Formulations: Shape Optimization of Elastoplastic Bodies in Contact (J. Haslinger). Analysis of an Incremental Formulation for Frictional Contact Problems (M. Cocu et al.). Linear Indenters under Conditions of Partial Slip (D.A. Hills et al.). Numerical Aspects: Modelization by Finite Elements of Cutting and Punching Problems Using an Algorithm Based on the Implicit Standard Materials Applied to the Friction (L. Bousshiné, G. De Saxcé). Some Computational Aspects of Structural Dynamics Problems with Frictional Contact (M. Wronski, M. Jean). Continuum Mechanics Mod
Calcul des structures : Giens'99( Book )

1 edition published in 2000 in French and held by 26 WorldCat member libraries worldwide

Actes du quatrième Colloque national en calcul des structures : 18-21 mai 1999, Giens, Var by Colloque national en calcul des structures( Book )

2 editions published in 1999 in French and held by 21 WorldCat member libraries worldwide

Neuvième colloque national en calcul des structures : Giens 2009 by Colloque national en calcul des structures( Book )

1 edition published in 2009 in French and held by 6 WorldCat member libraries worldwide

Neuvième colloque national en calcul des structures : Giens 2009 by Colloque national en calcul des structures( Book )

1 edition published in 2009 in French and held by 4 WorldCat member libraries worldwide

Analyse de modèles mécaniques : destinés à l'étude des vibrations engendrées par une charge mobile roulant sur une poutre by M Raous( Book )

2 editions published in 1973 in French and held by 3 WorldCat member libraries worldwide

ESDA 1996 : proceedings of the 1996 engineering systems design and analysis conference( Book )

1 edition published in 1996 in English and held by 3 WorldCat member libraries worldwide

Surfaces, contact, frottement : Colloque national Mécamat, Aussois, 23-27 janvier 2000 by Colloque national Mécamat( Book )

in French and held by 2 WorldCat member libraries worldwide

Méthodes multiniveaux pour des problèmes de contact unilatéral avec frottement by Laurence Grego( Book )

1 edition published in 1995 in French and held by 2 WorldCat member libraries worldwide

L'OBJECTIF DE CE TRAVAIL EST D'ETUDIER LES METHODES MULTINIVEAUX POUR DES PROBLEMES NON LINEAIRES DE MECANIQUE DES STRUCTURES PLUS PRECISEMENT POUR DES PROBLEMES DE CONTACT UNILATERAL AVEC FROTTEMENT DE COULOMB LOCAL. NOUS DEVELOPPONS LES METHODES MULTIGRILLES ET LES METHODES FAC (FAST ADAPTIVE COMPOSITE GRID) QUI ASSOCIENT DES TECHNIQUES MULTIGRILLES AVEC LA STRATEGIE DES METHODES DE DECOMPOSITION DE DOMAINE AVEC RECOUVREMENT DE TYPE SCHWARZ. CES ALGORITHMES REDUISENT LES TEMPS DE CALCUL DES SYSTEMES A TRES GRAND NOMBRE DE DEGRES DE LIBERTE. L'ETUDE EST ABORDEE SOUS DIFFERENTS ASPECTS: FORMULATION MATHEMATIQUE, ANALYSE NUMERIQUE, ALGORITHME, IMPLANTATION NUMERIQUE (SOUS STANDARD MODULEF) ET TESTS D'EFFICACITE DES DIVERSES METHODES
Contact, frottement, grandes déformations élastoplastiques application à l'emboutissage by Frédéric Dubois( Book )

1 edition published in 1994 in French and held by 2 WorldCat member libraries worldwide

CE TRAVAIL EST UNE CONTRIBUTION A L'ETUDE DE PROBLEMES BIDIMENSIONNELS DE CONTACT AVEC FROTTEMENT, ENTRE UN CORPS RIGIDE ET UN SOLIDE DEFORMABLE ELASTOPLASTIQUE, EN PRESENCE DE GRANDES DEFORMATIONS ET DE GRANDS DEPLACEMENTS. PLUS PRECISEMENT, ON S'INTERESSE A L'INFLUENCE DU FROTTEMENT ET A L'INFLUENCE DE LA PRESENCE DES JONCS DE RETENUE SUR LE ROLE DU SERRE-FLAN EN EMBOUTISSAGE. LE COMPORTEMENT VOLUMIQUE DU MATERIAU EST SUPPOSE ELASTOPLASTIQUE ISOTROPE, AVEC ECROUISSAGE ISOTROPE. LE MODELE RETENU UTILISE LA NOTION DE CONFIGURATION INTERMEDIAIRE OBTENUE PAR DECHARGE ELASTIQUE LOCALE DU MATERIAU. LE COMPORTEMENT ENTRE LA CONFIGURATION INTERMEDIAIRE ET LA CONFIGURATION ACTUELLE EST CARACTERISE PAR UNE REPONSE HYPERELASTIQUE. LA CONFIGURATION INTERMEDIAIRE EST ACTUALISEE PAR INTEGRATION DES LOIS D'EVOLUTION PLASTIQUE, EN UTILISANT UNE METHODE DE PREDICTION ELASTIQUE-CORRECTION PLASTIQUE (PAR RETOUR RADIAL). UN TRAITEMENT PARTICULIER DU CARACTERE INCOMPRESSIBLE DE LA PLASTICITE, BASE SUR UNE FORMULATION A TROIS CHAMPS, EST PROPOSE. LE COMPORTEMENT SURFACIQUE EST DECRIT PAR DES CONDITIONS DE CONTACT UNILATERAL AVEC FROTTEMENT DE COULOMB. LA FORMULATION CONTINUE EN GRANDES DEFORMATIONS EST ABORDEE. LA RESOLUTION DES EQUATIONS D'EQUILIBRE NON-LINEAIRES AVEC CONTRAINTES (DUES AU CONTACT ET AU FROTTEMENT) NECESSITE L'UTILISATION D'UNE METHODE DE NEWTON GENERALISEE. DIFFERENTES METHODES NUMERIQUES POUR RESOUDRE, A CHAQUE ITERATION D'EQUILIBRE, LE SYSTEME LINEAIRE AVEC CONTRAINTES SONT PRESENTEES ET COMPAREES: METHODES DE PROGRAMMATION MATHEMATIQUE (LEMKE, GAUSS-SEIDEL, ROSEN), TECHNIQUES DE REGULARISATION (PENALISATION, LAGRANGIEN AUGMENTE). UN ALGORITHME DE PILOTAGE EN DEPLACEMENT PERMETTANT DE MAINTENIR L'EFFORT APPLIQUE PAR LE SERRE-FLAN EST PROPOSE. DES RESULTATS D'ETUDES NUMERIQUES ET EXPERIMENTALES SUR L'INFLUENCE DU FROTTEMENT SUR LES PETITS RAYONS SONT PRESENTES ET COMPARES. ENFIN UN PROBLEME D'EMBOUTISSAGE COMPLET EST TRAITE
Modèle d'adhésion cicatrisante et applications au contact verre/élastomère by Mathieu Schryve( Book )

1 edition published in 2008 in French and held by 1 WorldCat member library worldwide

Many problems encountered in industry are concerned with interface evolutions, where contact, friction and adhesion are fundamental topics. This PhD thesis contributes to the development of a model involving adhesion and friction and allowing the healing of the adhesive bonds when the bodies are again pushed closer together after their separation. This model is called model of healing adhesion. In this work the applications concern specifically the contact glass/rubber. The formation of the the adhesion neck, jump-on and jump-off phenomena and the formation and the propagation of the Schallamach waves are investigated. A modelling of the adhesive contact is thus proposed, based on thermodynamic considerations and surface interactions concepts. In addition to the possible healing of the adhesives bonds, the originality of the model is that healing process and damage process are both related to the rate of the solicitation at the interface. According to the applications, the approch allows to consider two potential sources of dissipation. One is called surface dissipation and linked to the behaviour of the interface. The second is called bulk dissipation and linked to the behaviour of the bodies. The dynamic formulation is done within the framework of the non-smooth mechanic. Implementations of appropriate numerical methods and simulations are done in LMGC90 (Montpellier - Marseille). The model is tested with Benchmark and validated with the simulation of a glass/rubber experiment
Frequency and time simulation of squeal instabilities. Application to the design of industrial automotive brakes. by Guillaume Vermot des Roches( )

1 edition published in 2011 in English and held by 1 WorldCat member library worldwide

Le crissement de frein est une nuisance sonore classique dans l'automobile. L'augmentationdes coefficients de friction et la réduction de la masse mènent aujourd'hui à de hauts niveauxvibratoires dans les fréquences auditives, et ces problèmes de qualité se traduisent par des pénalités économiques aux équipementiers, bien qu'il n'existe pas de méthode robuste de conception.La pratique industrielle repose donc sur de coûteuses phases de prototypage et d'ajustement.L'évolution de la puissance de calcul permet le calcul de grands assemblages mécaniques mais lesétudes vibratoires non-linéaires restent généralement hors de portée. Dans ce contexte, l'objectifde la thèse est de fournir, dès les phases de conception, des outils de conception numérique d'aideà la résolution du crissement.Une méthode de réduction paramétrée utilisant comme base de Rayleigh-Ritz les modes réelsdu système assemblé permet la génération de modèles réduits très compacts, avec modes réelsexacts. La méthode proposée d'ajustement des modes de composants utilise les modes libresde composants comme degrés de liberté explicites. L'étude des sensibilités et la réanalyse d'unassemblage en fonction de modifications à l'échelle d'un composant deviennent possibles. Lesétudes temporelles non-linéaires sont rendues possibles par deux développements. Un schémade Newmark non-linéaire modifié et un Jacobien fixe adapté aux vibrations de contact sontintroduits. Le frein est réduit en un superélément avec modes réels exacts et une zone nonréduite au niveau du contact.Un ensemble d'outils de conception est illustré sur un modèle industriel de frein. La stabilitéinstantanée et les trajectoires de modes complexes sont étudiées. Les interactions modales et lesphénomènes non-linéaires au sein des cycles limites sont alors mieux compris. Des corrélationstemps/fréquence sont obtenues par l'identification modale instantanée et une décompositionespace-temps. La grande utilité d'un modèle temporel d'amortissement modal est illustrée.Enfin, la modification d'un composant critique au crissement est testée et validée
ESDA 1996 : proceedings of the 1996 engineering systems design and analysis conference( Book )

1 edition published in 1996 in English and held by 1 WorldCat member library worldwide

Frottement et instabilités en dynamique bruits de crissement by Didier Vola( Book )

1 edition published in 1998 in French and held by 1 WorldCat member library worldwide

Modélisation d'un milieu multicouche 3D sous sollicitation de contact application aux prothèses de genou stérilisées = odelling of a 3D multilayered body under contact conditions : application to sterilised knee prostheses by Sylvie£F1971- Plumet( Book )

1 edition published in 1998 in French and held by 1 WorldCat member library worldwide

Coating and surface treatments are more and more used to meet requirements of severe loading conditions. These coatings must withstand in particular friction conditions inducing fatigue phenomena and sometimes critical wear. Coating selection is traditionally based on experimental tests and human knowledge. Nevertheless a theoretical approach is first required to guide the choice towards the great amount of possibilities avoiding incompatibility in terms of thermo-mechanical properties, finite thickness, interface behaviour, etc. A 3D theoretical model has been therefore developed to determine internal stress field in multilayered bodies, as coating/substrate configurations or bodies with change in mechanical properties versus the depth. Internal and surface stress fields solving the contact problem of a rigid solid rolling and/or sliding over the multilayered body. An half analytical and half-numerical method based on integral transforms (Fourier) and transfer matrix formulation is proposed for its easy use and performances in computer time. This model is used here to study the knee prosthesis behaviour. One part of the prosthesis, the tibial insert made in UHMWPE, presents a multilayered configuration due to the sterilisation effects? The study has been conducted to improve the understanding of the influence of each mechanical properties and thickness of the layers and of the tibial insert thickness. For example, it leads to the definition of a minimal tibial insert finite thickness depending on the patient body weight and to the quantification of stress field variations before and after sterilisation. Delamination and decohesion zones have been identified and compared to ones on explanted prostheses with a good accuracy. The model is also able to determine if plasticity strain, delamination and cracks may occur due to tribological solicitations
Dynamique des interfaces multicontact by Viet-Hung Dang( )

1 edition published in 2013 in French and held by 1 WorldCat member library worldwide

The friction noise between two rough surfaces is caused by the vertical vibration generated by inter-asperity impacts of sliding solids. This phenomenon involves the physics of multicontact interfaces, a field which is largely unknown. The purpose of this thesis is to understand the mechanisms of noise generation and the energy transfer process between two rough surfaces in sliding contact. The contact spots in the interface are rapidly renewed during the movement in a random fashion but their statistical properties remain to be discovered. A numerical tool is developed in order to efficiently study this phenomenon at both macroscopic and microscopie scales. The simulations are carried out thanks to the high performance computing centre in Lyon. This study leads to the following conclusions. The vibration level Lv (dB) is an increasing logarithm function of surface roughness Ra and sliding velocity V. This statement is consistent with experimental results available in the literature. Moreover, we can analyze precisely the asperity shocks which are defined from the time evolution of the contact force. The shock duration is of the order of 0.1 ms, the maximal contact force can reach to 100 times the weight of sliding solid, and the shock rate is of the order of 10000 for a surface of 4 cm2 . The asperity shocks are transient excitations, brief but abundant and intensive. These shocks behave like vibrational energy sources and are responsible of the energy transfer in the interface. This is the transformation process of kinetic energy to vibrational energy which is responsible of friction noises
Formulation et résolution des problèmes de contact avec frottement et adhérence en grandes déformations by Anne-Sophie Caro( Book )

1 edition published in 1999 in French and held by 1 WorldCat member library worldwide

Fissuration sous contraintes alternées en viscoélasticité et en viscoplasticité by M Raous( Book )

in Multiple languages and held by 1 WorldCat member library worldwide

Friction and Instabilities by J. A. C Martinis( )

1 edition published in 2002 in English and held by 1 WorldCat member library worldwide

 
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Friction and instabilitiesFriction and Instabilities
Alternative Names
Raous, M.

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Friction and Instabilities