Damage-plastic model for concrete failure

Grassl, Peter; Jirásek, Milan

doi:10.1016/j.ijsolstr.2006.06.032

Cited by 473 publications

(322 citation statements)

References 33 publications

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“…Note that the control modeling and calculations were done by means of the damage-plastic model for concrete, as described in detail in Grassl and Jirásek (2006) and implemented in OOFEM. These results matched well the results obtained by the ATENA software.…”

Section: Finite-element Simulationsmentioning

confidence: 99%

Size Effect in Flexure of Prestressed Concrete Beams Failing by Compression Softening

2014

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Abstract:The typical cause of flexural failure of prestressed beams is compression crushing of concrete, which is a progressive softening damage. Therefore, according to the amply validated theory of deterministic (or energetic) size effect in quasi-brittle materials, a size effect must be expected. A commercial finite-element code, A TEN A, with embedded constitutive equations for softening damage and a localization limiter in the form of the crack band model, is calibrated by the existing data on the load-deflection curves and failure modes of prestressed beams of one size. Then this code is applied to beams scaled up and down by factors of 4 and I /2. It is found that the size effect indeed takes place. Within the size range of beam depths of approximately 152-I ,220 mm, the size effect represents a nominal strength reduction of about 30% to 35%. In the interest of design economy and efficiency, a size effect correction factor could be introduced easily into the current code design equation. However, this is not really necessary for safety since the safety margin required by the code is exceeded for the normal practical size range if the hidden safety margins are taken into account. The mildness of the size effect in the normal size range is explained by the fact that the compression softening zone occupies a large portion of the beam and that, at peak load, the normal stress profiles across the softening zone exhibit only a minor stress reduction below the strength limit. Fitting the type 2 size effect Jaw to the data can provide a simple extrapolation to much deeper beams, for which a stronger size effect is expected. But the extrapolation has some degree of uncertainty because of higher scatter of the test data used for calibrations.

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Section: Finite-element Simulationsmentioning

confidence: 99%

Size Effect in Flexure of Prestressed Concrete Beams Failing by Compression Softening

2014

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“…However the numerical simulations addressed in this study was restricted to the uniaxial and triaxial state of stresses. In this type of simulations the zone of localized strains are assumed to be diffuse, so the analysis does not depend on the element size [53][54][55]. In the future developments, the model needs to be regularized by introducing the characteristic lengths in tension and compression into the constitutive equation.…”

Section: Constitutive Equations For the Rate Dependent Multi-laminatementioning

confidence: 99%

Multi-Laminate Rate-Dependent Modelling of Static and Dynamic Concrete Behavior through Damage Formulation

Sadrnejad

Hoseinzadeh

2017

Scientia Iranica

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Mathematical simulation of the nonlinear tri-dimensional mechanical behavior of quasi-brittle materials like concrete is one of the biggest challenges in the engineering science. It is vital to have the knowledge of the response of concrete specimens subjected to low and high strain rate deformation for the analysis of concrete structures under the static and dynamic loading cases. The behavior of this material is generally known to be strain rate sensitive. Among phenomena of different orientation, the multi plane models, like multi-laminate models using a constitutive equation in a vectorial form rather than tensorial form by means of capturing interactions, can meet this goal adequately. This paper suggests a robust rate dependent damage based model in the multi-planes framework accomplished with minimum parameters for calibration and appropriate for engineering purposes. This damage formulation has been built on the basis of two types of essential damage, axial damage and shear damage, that basically can happen on each sampling plane and based on this concept two new axial and shear damage functions are proposed. Model verification has been studied under different compressive and tensile loading rates, comparing the results of the proposed model with the experimental data and Mohr-Coulomb failure criterion envelope line.

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“…The damage-plastic concrete model (MAT_273) is based on the studies in [22][23], and is aimed to simulate the failure of concrete structures subjected to dynamic loads. The model is based on effective stress plasticity, with damage based on both plastic and elastic strain measures.…”

Section: Materials Modellingmentioning

confidence: 99%

“…The definition of the model requires a large number of parameters, but several of them are directly related to one another by explicit expressions. Other parameters can be determined from certain assumptions, or taken by their recommended default values [22], so that a limited number of material properties must be specified.…”

Section: Materials Modellingmentioning

confidence: 99%

Finite-Discrete Element Modelling of Masonry Infill Walls Subjected to Out-of-Plane Loads

Liberatore¹,

Sorrentino²,

Pasca³

et al. 2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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Damage-plastic model for concrete failure

Cited by 473 publications

References 33 publications

Size Effect in Flexure of Prestressed Concrete Beams Failing by Compression Softening

Size Effect in Flexure of Prestressed Concrete Beams Failing by Compression Softening

Multi-Laminate Rate-Dependent Modelling of Static and Dynamic Concrete Behavior through Damage Formulation

Finite-Discrete Element Modelling of Masonry Infill Walls Subjected to Out-of-Plane Loads

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