FraMCoS 2 1995 Zurich, Switzerland

A Simple Fracture Mechanics Model for Mixed-Mode Failure in Concrete

A simple fracture mechanics model is presented based on the fictitious crack concept where the crack initiation is controlled by a failure surface in the normal and shear stress space. The postfailure behaviour is controlled by a softening isotropic kinematic…

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Year 1995
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Abstract

A simple fracture mechanics model is presented based on the fictitious crack concept where the crack initiation is controlled by a failure surface in the normal and shear stress space. The postfailure behaviour is controlled by a softening isotropic kinematic rule based on the effective stress-crack opening deformation. The model in its simplest configuration needs only four parameters, the uniaxial tensile and compressive strengths, the value of fracture energy ( G ) and a constant controlling the isotropic softening 1 the yield surf ace. The model has been implemented in the inner softening band approach where a strong discontinuity is included in the element for- mulation.