FraMCoS 3 1998 Gifu, Japan

A Class of Gradient-Dependent Damage Models for Concrete Cracking

Isotropic and anisotropic damage formulations for concrete fracture are re- viewed, including the classical fixed and rotating smeared crack models and more refined approaches based on the microplane concept. Higher- order gradients are introduced to avoid the boundary value problem…

First page of: A Class of Gradient-Dependent Damage Models for Concrete Cracking
Year 1998
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Abstract

Isotropic and anisotropic damage formulations for concrete fracture are re- viewed, including the classical fixed and rotating smeared crack models and more refined approaches based on the microplane concept. Higher- order gradients are introduced to avoid the boundary value problem be- coming ill-posed at the onset of softening. For an infinite one-dimensional bar dispersion analyses are carried out to examine the effect of using gra- dients of different strain measures or internal variables.