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Author: Jean Jacques CRISPEL Publisher: ISBN: Category : Languages : fr Pages : 268
Book Description
ETUDE DE LA REVERSIBILITE: INFLUENCE DE L'ETAT DE CONTRAINTES, INFLUENCE DE LA STRUCTURE ET DE LA NATURE DU MATERIAU. ETUDE DES LOIS CONTRAINTE DEFORMATION; ESSAIS TRIAXIAUX A PRESSION LATERALE CONSTANTE, ESSAIS TRIAXIAUX A "R=CONSTANTE", LOIS HYPERBOLIQUES.
Author: Jean Jacques CRISPEL Publisher: ISBN: Category : Languages : fr Pages : 268
Book Description
ETUDE DE LA REVERSIBILITE: INFLUENCE DE L'ETAT DE CONTRAINTES, INFLUENCE DE LA STRUCTURE ET DE LA NATURE DU MATERIAU. ETUDE DES LOIS CONTRAINTE DEFORMATION; ESSAIS TRIAXIAUX A PRESSION LATERALE CONSTANTE, ESSAIS TRIAXIAUX A "R=CONSTANTE", LOIS HYPERBOLIQUES.
Book Description
Les matériaux granulaires pulvérulents sont des matériaux composés de grains, nommés également éléments ou particules, de formes et de tailles diverses. Nous les retrouvons dans tous les types d'industrie. Nous nous intéressons plus particulièrement à la compréhension et la caractérisation des matériaux dits pulvérulents en vue de leurs utilisations, principalement lors du déchargement d'un stockage et de leur dosage en continu. Actuellement, il n'existe pas de méthode satisfaisante pour déterminer leur comportement. Nous effectuons deux approches différentes, mais complémentaires, pour l'analyser. La première investigation porte sur le comportement des poudres lors de leur mise en condition. Nous montrons l'existence de deux conditions nécessaires pour la réalisation d'un bon dosage : la stabilité mécanique et celle de la masse volumique apparente. Nous proposons une modélisation du comportement des matériaux pulvérulents lors de leur conditionnement. Elle permet de définir les caractéristiques (compression, vitesse,) vérifiant les deux critères d'un bon dosage. Les influences de la température et de la teneur en eau du matériau sont également décrites. La seconde investigation, menée en parallèle, permet de valider une approche différente : l'étude des poudres à l'aide d'un rhéomètre. Nous mettons en évidence la continuité du comportement physico-mécanique entre suspensions de particules solides dans un liquide et matériaux pulvérulents par des modélisations de formes identiques. Le rhéogramme des poudres obtenu est cependant typique. Nous présentons l'importance de la fraction volumique solide du matériau cisaille sur la variation et la modélisation du seuil de contrainte de cisaillement. A terme, il est envisageable de pouvoir modéliser le comportement des poudres dans des environnements simples puis dans des environnements industriels plus complexes
Author: Pierre-Yves Hicher Publisher: John Wiley & Sons ISBN: 1118600797 Category : Science Languages : en Pages : 324
Book Description
This book addresses the latest issues in multiscale geomechanics. Written by leading experts in the field as a tribute to Jean Biarez (1927-2006), it can be of great use and interest to researchers and engineers alike. A brief introduction describes how a major school of soil mechanics came into being through the exemplary teaching by one man. Biarez's life-long work consisted of explaining the elementary mechanisms governing soil constituents in order to enhance understanding of the underlying scientific laws which control the behavior of constructible sites and to incorporate these scientific advancements into engineering practices. He innovated a multiscale approach of passing from the discontinuous medium formed by individual grains to an equivalent continuous medium. The first part of the book examines the behavior of soils at the level of their different constituents and at the level of their interaction. Behavior is then treated at the scale of the soil sample. The second part deals with soil mechanics from the vantage point of the construction project. It highlights Biarez's insightful adoption of the Finite Element Codes and illustrates, through numerous construction examples, his methodology and approach based on the general framework he constructed for soil behavior, constantly enriched by comparing in situ measurements with calculated responses of geostructures.
Author: Michel Ruban Publisher: CRC Press ISBN: 9789058092649 Category : Technology & Engineering Languages : en Pages : 738
Book Description
A translation and fully updated version of the French title "Controles de qualit en construction routi re", 1987. This book presents the total panorama of the methods and means available to the various interveners.
Author: Eduardo E. Alonso Publisher: CRC Press ISBN: 0203834011 Category : Technology & Engineering Languages : en Pages : 1532
Book Description
In recent decades the development of unsaturated soil mechanics has been remarkable, resulting in momentous advances in fundamental knowledge, testing techniques, computational procedures, prediction methodologies and geotechnical practice. The advances have spanned the full spectrum of theory and practice. In addition, unsaturated materials exhibiting complex behaviour such as residual soils, swelling soils, compacted soils, collapsing soils, tropical soils and solid wastes have been integrated in a common understanding of shared behaviour features. It is also noteworthy that unsaturated soil mechanics has proved surprisingly fruitful in expanding to other neighbouring areas such as swelling rocks, rockfill mechanics, and freezing soils. As a consequence, geotechnical engineering involving unsaturated soils can be now approached from a more rational and systematic perspective leading towards an improved and more effective practice. Unsaturated Soils contains the papers presented at the 5th International Conference on Unsaturated Soil (Barcelona, Spain, 6-8 September 2010). They report significant advances in the areas of unsaturated soil behaviour, testing techniques, constitutive and numerical modelling and applications. The areas of application include soil-atmosphere interaction, foundations, slopes, embankments, pavements, geoenviromental problems and emerging topics. They are complemented by three keynote lectures and three general reports covering general issues of modelling, testing and applications. Unsaturated Soils is a comprehensive record of the state-of-the art in unsaturated soil mechanics and a sound basis for further progress in the future. The two volumes will serve as an essential reference for academics, researchers and practitioners interested in unsaturated soils.
Author: Bernard Cambou Publisher: Springer Science & Business Media ISBN: 9783211829202 Category : Science Languages : en Pages : 416
Book Description
This book presents a complete and comprehensive analysis of the behaviour of granular materials including the description of experimental results, the different ways to define the global behaviour from local phenomena at the particle scale, the various modellings which can be used for a D.E.M. analysis to solve practical problems and finally the analysis of strain localisation. The concepts developed in this book are applicable to many kinds of granular materials considered in civil, mechanical or chemical engineering.
Author: Jean Jacques CRISPEL
Author: Jean Jacques CRISPEL
Author: Gilbert Olivari
Author: M. Jamiolkowski
Author: Franck Blaszczyk
Author: Pierre-Yves Hicher
Author: Michel Ruban
Author: F. Darve
Author: Eduardo E. Alonso
Author: Bernard Cambou
Author: