Continuous And Discontinuous Modelling Of Fracture In Concrete Using Fem - Tejchman Jacek; Bobinski Jerzy | Libro Springer 07/2012 - HOEPLI.it


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tejchman jacek; bobinski jerzy - continuous and discontinuous modelling of fracture in concrete using fem

Continuous and Discontinuous Modelling of Fracture in Concrete Using FEM

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Dettagli

Genere:Libro
Lingua: Inglese
Editore:

Springer

Pubblicazione: 07/2012
Edizione: 2013





Sommario

Introduction.- General.- Literature Overview.- Theoretical Models.- Discrete Lattice Model.- Epilogue.




Trama

The book analyzes a quasi-static fracture process in concrete and reinforced concrete by means of constitutive models formulated within continuum mechanics. A continuous and discontinuous modelling approach was used. Using a continuous approach, numerical analyses were performed using a finite element method and four different enhanced continuum models: isotropic elasto-plastic, isotropic damage and anisotropic smeared crack one. The models were equipped with a characteristic length of micro-structure by means of a non-local and a second-gradient theory. So they could properly describe the formation of localized zones with a certain thickness and spacing and a related deterministic size effect. Using a discontinuous FE approach, numerical results of cracks using a cohesive crack model and XFEM were presented which were also properly regularized. Finite element analyses were performed with concrete elements under monotonic uniaxial compression, uniaxial tension, bending and shear-extension. Concrete beams under cyclic loading were also simulated using a coupled elasto-plastic-damage approach. Numerical simulations were performed at macro- and meso-level of concrete. A stochastic and deterministic size effect was carefully investigated. In the case of reinforced concrete specimens, FE calculations were carried out with bars, slender and short beams, columns, corbels and tanks. Tensile and shear failure mechanisms were studied. Numerical results were compared with results from corresponding own and known in the scientific literature laboratory and full-scale tests.

 

 








Altre Informazioni

ISBN:

9783642284625

Condizione: Nuovo
Collana: Springer Series in Geomechanics and Geoengineering
Dimensioni: 235 x 155 mm Ø 799 gr
Formato: Copertina rigida
Pagine Arabe: 418
Pagine Romane: vi






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