Book ChapterDOI
Stability and Spurious Kinematic Modes in Strain-Softening Concrete
Rene de Borst,Johan Blaauwendraad +1 more
- pp 581-584
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TLDR
In this paper, the authors investigated the effect of softening or brittle crack models for the stability of numerical simulations of the mechanical behavior of concrete structures and showed that brittle as well as softening crack models may trigger the formation of spurious kinematic modes.Abstract:
Consequences of the use of softening or brittle crack models for the stability of numerical simulations of the mechanical behavior of concrete structures are investigated. It is shown that brittle as well as softening crack models may trigger the formation of spurious kinematic modes.read more
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Smeared Crack Approach and Fracture Localization in Concrete
TL;DR: In this paper, a smeared crack formulation is proposed which treats concrete constitutive behaviour separately from crack interface behaviour, and the model has been evaluated by using the DIANA finite element package.
Journal ArticleDOI
Non-orthogonal cracks in a smeared finite element model
R. de Borst,P. Nauta +1 more
TL;DR: In this paper, a new model for handling non-orthogonal cracks within the smeared crack concept is described, based on a decomposition of the total strain increment into a concrete and into a crack strain increment.
Journal ArticleDOI
Computation of post-bifurcation and post-failure behavior of strain-softening solids
TL;DR: In this article, the authors reviewed the use of strain-softening models both theoretically and numerically and demonstrated that the most serious consequence of strain softening is that it may cause snap-back behavior on a structural level.
Journal ArticleDOI
Nonassociated and coupled flow rules of elastoplasticity for rock-like materials
G. Maier,Tomasz Hueckel +1 more
TL;DR: In this paper, the authors studied the relationship between elastoplastic stress-strain relations with the current yield surface and the elastic modulus and showed that the rate response uniqueness and material stability of the elasticity modulus can be interpreted in mechanical terms using standard compression tests and for particular forms of constitutive laws.
Journal ArticleDOI
Analysis of Mixed‐Mode Fracture in Concrete
Jan G. Rots,R. de Borst +1 more
TL;DR: In this paper, a smeared crack model that covers tensile softening in mode I and shear softening for mode II fracture is described, and the model provides for unloading and reloading and for multiple crack formation.