Download or read book Etudes th orique et exp rimentale du comportement de mat riaux composites en contraintes planes written by and published by . This book was released on 1992 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book tudes th orique et exp rimentale du comportement de mat riaux composites en contraintes planes written by Jean-François Maire and published by . This book was released on 1992 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJET DE CE TRAVAIL EST DE DEVELOPPER UNE MODELISATION PHENOMENOLOGIQUE DU COMPORTEMENT MECANIQUE DE STRUCTURES COMPOSITES SOUS SOLLICITATIONS COMPLEXES. UN VASTE DOMAINE D'ESSAIS UNIAXIAUX OU MULTIAXIAUX STATIQUES, CYCLIQUES, EN FLUAGE OU EN RELAXATION EST NECESSAIRE A UNE BONNE COMPREHENSION DU COMPORTEMENT DE CES MATERIAUX. DANS UN PREMIER TEMPS, NOUS PRESENTONS UN DISPOSITIF EXPERIMENTAL DE TRACTION-TORSION-PRESSION INTERNE QUE NOUS AVONS CONCU ET REALISE. IL PERMET D'OBTENIR UN ETAT DE CONTRAINTES PLANES ET HOMOGENES SUR DES EPROUVETTES TUBULAIRES A PAROI MINCE. LES TUBES TESTES SONT ESSENTIELLEMENT DES STRATIFIES BOBINES VERRE-EPOXY A FIBRES LONGUES (|30|, |45|, |60|). CONTRAIREMENT AUX MODELES CLASSIQUES QUI CONSIDERENT LE MATERIAU HOMOGENEISE, NOUS NOUS INTERESSONS AUSSI AUX ASPECTS MICROSTRUCTURAUX. NOUS PROPOSONS DE PARTAGER LA DEFORMATION TOTALE: * EN UNE DEFORMATION CLASSIQUE DUE A L'ALLONGEMENT DES FIBRES A ANGLE CONSTANT AVEC TRANSFERT DE CHARGE DE LA RESINE SUR LES FIBRES ET D'UN PLI SUR L'AUTRE (COMPORTEMENT QUASI-ELASTIQUE POUR LES FIBRES ET VISCOELASTIQUE POUR LA MATRICE). * EN UNE DEFORMATION STRUCTURALE A LONGUEUR DE FIBRES CONSTANTE DUE A LA ROTATION DES FIBRES. DANS CE TRAVAIL, UN SOIN PARTICULIER EST APPORTE A LA METHODOLOGIE EXPERIMENTALE QUI PERMET UNE CONSTRUCTION ET UNE VALIDATION PROGRESSIVES DU MODELE. LES DEFORMATIONS CLASSIQUE ET STRUCTURALE COMPRENNENT DES TERMES INSTANTANES, VISQUEUX ET RESIDUELS. LA MISE EN EVIDENCE DE LA NOTION D'ISOCHRONISME CONDUIT A L'INTRODUCTION D'UN SPECTRE DE TEMPS DE RELAXATION CARACTERISANT LA VISCOELASTICITE. L'ENDOMMAGEMENT ANISOTROPE EST INTRODUIT DANS LES LOIS DE COMPORTEMENT DE MANIERE SCALAIRE GRACE A UNE APPROCHE MICROMECANIQUE SELF-CONSISTENT DE LA FISSURATION TRANSVERSE. AFIN DE MINIMISER LE NOMBRE DE COEFFICIENTS A IDENTIFIER, CETTE ETUDE TIENT COMPTE DES PARTICULARITES DES CONSTITUANTS ET DU MONOCOUCHE POUR DETERMINER LE COMPORTEMENT MACROSCOPIQUE DU STRATIFIE. CE TRAVAIL FAIT PARTIE D'UN AXE DE RECHERCHES VISANT A ETABLIR UNE MODELISATION COMPLETE DU COMPORTEMENT DES MATERIAUX COMPOSITES NECESSAIRE AUX CALCULS DE STRUCTURES
Download or read book Adhesion Between Polymers and Concrete Adh sion Entre Polym res Et B ton written by H. R. Sasse and published by Springer. This book was released on 1986 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preface Adhesion is a phenomenon architects and civil engineers are not very familiar with. In other disciplines knowledge about surface properties and the background of bonding energies is also far from satisfactory; nevertheless there are many important· applications in concrete engineering, where adhesion is necessary for success and durability. These include: - coating and painting - repair of concrete surfaces - bonding of fresh to old concrete - crack injection - glueing of precast elements - glueing of steel to concrete, etc. In 1981 RILEM established the technical committee 52-RAC 'Resin Adherence to Concrete'. The main aims of the committee's work were - to collect research results and practical experiences - to initiate and coordinate research programs - to develop, on a scientific base, test methods for field and for laboratory purposes. One of the results of the committee's work is a state-of-the-art report, which will be presented orally as a General Report at the International Symposium ISAP '86, and will be printed either in the RILEM journal Materials and Structures or separately. Several test recommendations have been elaborated and will be prepared as drafts for the participants ofISAP '86. These are: - direct tensile test - pull-off test - direct shear test - slant shear test - four-point bending test - dynamic loading test - thermal compatibility test (two versions) - injectibility test.
Download or read book Applications of Tensor Functions in Solid Mechanics written by J.P. Boehler and published by Springer. This book was released on 2014-05-04 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Theory of Propellers written by Theodore Theodorsen and published by . This book was released on 1944 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: A technical method is given for calculating the axial interference velocity of a propeller. The method involves the use of certain weight functions P, Q, and F. Numerical values for the weight functions are given for two-blade, three-blade, and six-blade propellers.
Download or read book Democritus written by Aldo Brancacci and published by BRILL. This book was released on 2007 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume gathers specific investigations dealing with some of the main topics of the research on Democritus: the catalogue of works, music, literary criticism, technics, zoology and the relation to medicine, physics, epistemology, posterity.
Download or read book Applications of the Theory of Plasticity in Soil Mechanics written by Jean Salençon and published by John Wiley & Sons. This book was released on 1977 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Satellite Situation Report written by Goddard Space Flight Center. Office of Public Affairs and published by . This book was released on 1977 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Continuum Mechanics written by Jean Salencon and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: Outstanding approach to continuum mechanics. Its high mathematical level of teaching together with abstracts, summaries, boxes of essential formulae and numerous exercises with solutions, makes this handbook one of most complete books in the area. Students, lecturers, and practitioners will find this handbook a rich source for their studies or daily work.
Download or read book Yield Design written by Jean Salençon and published by Wiley-ISTE. This book was released on 2013-05-20 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the middle of the 20th Century yield design approaches have been identified with the lower and upper bound theorem of limit analysis theory – a theory associated with perfect plasticity. This theory is very restrictive regarding the applicability of yield design approaches, which have been used for centuries for the stability of civil engineering structures. This book presents a theory of yield design within the original “equilibrium/resistance” framework rather than referring to the theories of plasticity or limit analysis; expressing the compatibility between the equilibrium of the considered structure and the resistance of its constituent material through simple mathematical arguments of duality and convex analysis results in a general formulation, which encompasses the many aspects of its implementation to various stability analysis problems. After a historic outline and an introductory example, the general theory is developed for the three-dimensional continuum model in a versatile form based upon simple arguments from the mathematical theory of convexity. It is then straightforwardly transposed to the one-dimensional curvilinear continuum, for the yield design analysis of beams, and the two-dimensional continuum model of plates and thin slabs subjected to bending. Field and laboratory observations of the collapse of mechanical systems are presented along with the defining concept of the multi-parameter loading mode. The compatibility of equilibrium and resistance is first expressed in its primal form, on the basis of the equilibrium equations and the strength domain of the material defined by a convex strength criterion along with the dual approach in the field of potentially safe loads, as is the highlighting of the role implicitly played by the theory of yield design as the fundamental basis of the implementation of the ultimate limit state design (ULSD) philosophy with the explicit introduction of resistance parameters. Contents 1. Origins and Topicality of a Concept. 2. An Introductory Example of the Yield Design Approach. 3. The Continuum Mechanics Framework. 4. Primal Approach of the Theory of Yield Design. 5. Dual Approach of the Theory of Yield Design. 6. Kinematic Exterior Approach. 7. Ultimate Limit State Design from the Theory of Yield Design. 8. Optimality and Probability Approaches of Yield Design. 9. Yield Design of Structures. 10. Yield Design of Plates: the Model. 11. Yield Design of Plates Subjected to Pure Bending. About the Authors Jean Salençon is Emeritus Professor at École polytechnique and École des ponts et chaussées, ParisTech, France. Since 2009 he has been a member of the Administrative Board of CNRS (Paris, France). He has received many awards including the Légion d’Honneur (Commander), Ordre National du Mérite (Officer) and Palmes Académiques (Commander). His research interests include structure analysis, soil mechanics and continuum mechanics.
Download or read book Generalized Feynman Amplitudes AM 62 Volume 62 written by Eugene R. Speer and published by Princeton University Press. This book was released on 2016-03-02 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a valuable discussion of renormalization through the addition of counterterms to the Lagrangian, giving the first complete proof of the cancellation of all divergences in an arbitrary interaction. The author also introduces a new method of renormalizing an arbitrary Feynman amplitude, a method that is simpler than previous approaches and can be used to study the renormalized perturbation series in quantum field theory.
Download or read book Relativistic Hydrodynamics and Magnetohydrodynamics written by André Lichnerowicz and published by . This book was released on 1967 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Debris written by Heiner Klinkrad and published by Springer Science & Business Media. This book was released on 2006-09-01 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: The future evolution of the debris environment will be forecast on the basis of traffic models and possible hazard mitigation practices. The text shows how large trackable objects will have re-entry pinpointed and predictions made on related risk assessment for possible ground impact. Models will also be described for meteoroids which are also a prevailing risk.
Download or read book Transonic Aerodynamics written by L. Pamela Cook and published by SIAM. This book was released on 1993-01-01 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers exciting results, perspectives, and case studies for the treatment of problems arising in transonic aerodynamics. New advances including triple deck theory, analysis of stagnation at the nose of a body, transonic choked flow, and the transonic area rule are presented. Interest in analyzing the transonic range of flight, its stability properties, and especially the question of designing reduced drag (shockless or weak shock) airfoils keeps growing. Present day commercial aircraft cruise in the transonic range. Mechanical and aeronautical engineers interested in compressible fluid flows, design of optimal wings, and an understanding of transonic flow held about wings and airfoils will find the book invaluable. This book is understandable to those with a knowledge of continuum mechanics (fluids) and asymptotic methods. It is appropriate for graduate courses in aerodynamics and mathematical methods.
Download or read book Tomita s Theory of Modular Hilbert Algebras and its Applications written by M. Takesaki and published by Springer. This book was released on 2006-11-15 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radiation Protection Programmes for the Transport of Radioactive Material written by International Atomic Energy Agency and published by . This book was released on 2024-02-29 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Safety Guide provides recommendations on meeting the requirements established in IAEA Safety Standards Series No. SSR-6 (Rev. 1), Regulations for the Safe Transport of Radioactive Material, 2018 Edition, for a radiation protection programme for the transport of radioactive material. The objectives of a radiation protection programme for the transport of radioactive material are to provide for adequate consideration of radiation protection measures in transport; to ensure that the system of radiological protection is adequately applied; to enhance a safety culture in the transport of radioactive material; and to provide practical measures to meet these objectives. The recommendations provided in this Safety Guide are applicable to the transport of radioactive material by all modes on land, water, or in the air, including transport that is incidental to the use of the radioactive material. The intended audience for this Safety Guide includes competent authorities, consignors, carriers, consignees, and operators of ports (e.g. harbours, seaports and airports). It will also be of interest to the employees of public authorities (customs authorities, harbour authorities, port authorities) concerning activities associated with the transport of radioactive material that involve radiation exposure.
Download or read book Radiation Protection Practice written by International Radiation Protection Association. International Congress and published by Elsevier Science & Technology. This book was released on 1988 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
