Finite-Element Modelling Of Structural Concrete - Kotsovos Michael D. | Libro Crc Press 05/2015 - HOEPLI.it


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Finite-Element Modelling of Structural Concrete Short-Term Static and Dynamic Loading Conditions




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Dettagli

Genere:Libro
Lingua: Inglese
Editore:

CRC Press

Pubblicazione: 05/2015
Edizione: 1° edizione





Note Editore

A Powerful Tool for the Analysis and Design of Complex Structural Elements Finite-Element Modelling of Structural Concrete: Short-Term Static and Dynamic Loading Conditions presents a finite-element model of structural concrete under short-term loading, covering the whole range of short-term loading conditions, from static (monotonic and cyclic) to dynamic (seismic and impact) cases. Experimental data on the behavior of concrete at both the material and structural levels reveal the unavoidable development of triaxial stress conditions prior to failure which dictate the collapse and ductility of structural concrete members. Moreover, and in contrast with generally accepted tenets, it can be shown that the post-peak behavior of concrete as a material is realistically described by a complete and immediate loss of load-carrying capacity. Hence rational analysis and design of concrete components in accordance with the currently prevailing limit-state philosophy requires the use of triaxial material data consistent with the notion of a fully brittle material, and this approach is implemented in the book by outlining a finite-element method for the prediction of the strength, deformation, and cracking patterns of arbitrary structural concrete forms. Presents a Unified Approach to Structural Modeling Numerous examples are given that show both the unifying generality of this proposed approach and the reliability of the ensuing numerical procedure for which the sole input is the specified uniaxial cylinder compressive strength of concrete and the yield stress of the steel. This not only offers a better understanding of the phenomenology of structural concrete behavior but also illustrates, by means of suitable examples, the type of revision required for improving design methods in terms of both safety and economy. This book: Highlights the significance of valid experimental information on the behavior of concrete under triaxial stress conditions for interpreting structural behavior Describes the techniques used for obtaining valid test data and modeling concrete behavior Discusses the modeling of steel properties as well as the interaction between concrete and steel Presents numerical techniques for incorporating the material models into nonlinear finite-element analysis for the case of short-term static loading Provides numerical techniques adopted for extending the use of the numerical analysis scheme for the solution of dynamic problems Predicts the response of a wide range of structural-concrete configurations to seismic and impact excitations Using relevant case studies throughout, Finite-Element Modelling of Structural Concrete: Short-Term Static and Dynamic Loading Conditions focuses on the realistic modeling of structural concrete on the basis of existing and reliable material data and aids in the research and study of structural concrete and concrete materials.




Sommario

Need for a reappraisalPhysical modelling of structural concreteConstitutive modellingConcluding remarksReferencesMain behavioural characteristics of concreteThe cylinder testPost-peak behaviourFracture processes in concreteFailure mechanism in concrete structuresA summary of characteristic features of concrete relevant to modelling material behaviourReferencesModelling of concrete behaviourConstutive relations for concreteStrength envelopes for concreteDeformational and yield characteristics of reinforcing steelA summary of characteristic features of concrete relevant to modelling of material behaviourReferencesStructure modelling for static problemsThe finite-element methodNonlinear analysisThe nonlinear finite element model for structural concreteMaterial and procedural factors influencing FE predictionsA brief outline of the smeared-model packageReferencesFinite-element solutions of static problemsEffect of crack closure on predictions of structural-concrete behaviour under monotonic loadingPerformance of structural-concrete members exhibiting points of contra-flexure under sequential loadingRC beam-column joints under cyclic loadingStructural walls under cyclic loadingNumerical experiments on flat slabsReferencesExtension of finite element modelling to dynamic problemsBackgroundThe equation of motionNumerical solution of the equation of motionNumerical procedure adopted for structural concreteImplementation of the dynamic schemeVerification studies for the dynamic schemeGeneral remarksReferencesReinforced concrete structural members under earthquake loadingIntroductionApplication of the earthquake loadRC columnsRC framesThree-storey RC wallTwo-level RC frame under seismic actionEffect of the confinement of reinforcement in boundary-column elements on the behaviour of structural-concrete walls under seismic excitationConcluding remarksReferencesStructural concrete under impact loadingIntroductionStructural concrete under compressive impact loadingStructural concrete under tensile impact loadingRC beams under impact loadingConcluding remarksReferencesA: Octahedral formulation of stresses and strainsB: Coordinate transformations




Autore

Michael Kotsovos is a senior research fellow, and former professor and head of the Structures Department, at the National Technical University of Athens. He was formerly a consultant to Jan Bobrowski and Partners; Rendel, Parmer and Tritton; and Taywood Engineering in London; followed by several years as a lecturer at Imperial College London, UK.







Altre Informazioni

ISBN:

9781498712309

Condizione: Nuovo
Dimensioni: 10 x 7 in Ø 1.90 lb
Formato: Copertina rigida
Illustration Notes:307 b/w images and 7 tables
Pagine Arabe: 381






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