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Continuous and Discontinuous Modelling of Fracture in Concrete Using FEM (Springer Series in Geomechanics and Geoengineering)

Continuous and Discontinuous Modelling of Fracture in Concrete Using FEM (Springer Series in Geomechanics and Geoengineering)

Автор: Jacek Tejchman, Jerzy Bobiski, 435 стр., ISBN: 3642284620

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...
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