An analysis of dynamic fracture in concrete with a continuum visco-elastic visco-plastic damage model

“…Most of the time, this delay effect in the material behavior is incorporated through phenomenological models (Desmorat et al, 2010;Sluys and De Borst, 1992;Wang et al, 1996;Glema et al, 2000;Graff et al, 2004;Pedersen et al, 2008). Those different models permit a regularization of the strain localization problem.…”

Section: Softening Strain Localization and Regularizationmentioning

confidence: 98%

A microstructurally-based internal length for strain localization problems in dynamics

Baudin

Keita

2015

European Journal of Mechanics - A/Solids

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“…Numerous references on the rate-dependent behaviour of concrete can be found in the literature [49][50][51], where the strength enhancement at the material level is studied and modelled in the context of small scale structural computations. However, the influence of the viscous effects at the global scale has not yet been investigated in contributions related to structural progressive collapse.…”

Section: Strain Rate Effects In Rcmentioning

confidence: 99%

“…For instance, Pedersen et al [49] developed a rate dependent macroscopic material model based on the microscopic and mesoscopic behaviour of concrete. In the present contribution, rate dependent one-dimensional constitutive laws for concrete and steel are used in the layers of the layered beam model.…”

Section: Rate Dependent Constitutive Modelmentioning

confidence: 99%

Investigation of the influence of design and material parameters in the progressive collapse analysis of RC structures

Iribarren

Berke

Bouillard

et al. 2011

Engineering Structures

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This contribution deals with the modelling of reinforced concrete (RC) structures in the context of progressive collapse simulations. One-dimensional nonlinear constitutive laws are used to model the material response of concrete and steel. These constitutive equations are introduced in a layered beam approach, in order to derive physically motivated relationships between generalised stresses and strains at the sectional level. This formulation is used in dynamic progressive collapse simulations to study the structural response of a multi-storey planar frame subjected to a sudden column loss (in the impulsive loading range). Thanks to the versatility of the proposed methodology, various analyses are conducted for varying structural design options and material parameters, as well as progressive collapse modelling options. In particular, the effect of the reinforcement ratio on the structural behaviour is investigated. Regarding the material modelling aspects, the influence of distinct behavioural parameters can be evaluated, such as the ultimate strain in steel and concrete or the potential material strain rate effects on the structural response. Finally, the influence of the column removal time in the sudden column loss approach can also be assessed. Significant differences are observed in terms of progressive failure pattterns for the considered parametric variations.

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An analysis of dynamic fracture in concrete with a continuum visco-elastic visco-plastic damage model

Cited by 83 publications

References 30 publications

Modeling of strain rate effects for concrete with viscoelasticity and retarded damage

Modeling of strain rate effects for concrete with viscoelasticity and retarded damage

A microstructurally-based internal length for strain localization problems in dynamics

Investigation of the influence of design and material parameters in the progressive collapse analysis of RC structures

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