Meso-scale modelling of the size effect on the fracture process zone of concrete

By P. Grassl, David Grégoire, Laura Rojas Solano, Gilles Pijaudier-Cabot. 2011

200 citations recorded by the source corpus.

The size effect on the fracture process zone in notched and unnotched three point bending tests of concrete beams is analysed by a meso-scale approach. Concrete is modelled at the meso-scale as stiff aggregates embedded in a soft matrix separated by weak interfaces. The mechanical response of the three phases is modelled by a discrete lattice approach. The model parameters were chosen so that the global model response in the form of load-crack mouth opening displacement curves were in agreement with experimental results reported in the literature. The fracture process zone of concrete is determined numerically by evaluating the average of spatial distribution of dissipated energy densities of random meso-scale analyses. The influence of size and boundary conditions on the fracture process zone in concrete is investigated by comparing the results for beams of different sizes and boundary conditions.

Subfields: Computational Mechanics, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/85aca4cc2e2104b3409e374be9024ae678f432ab

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In Computational Mechanics

In Mechanics of Materials

Citations in the corpus

3D mesoscale finite element modelling of concrete (2017, unknown): “A number of studies on mesoscale modelling of concrete using a continuum approach can be found in the existing literature [3-22].”
Failure and size effect for notched and unnotched concrete beams (2013, result): “Recent comparisons with results obtained from mesoscale models gave good prospect [44, 45].”
Lattice Element Models and Their Peculiarities (2017, methodology): “Some of the notable lattice model applications to concrete are presented in papers of Schlangen and van Mier [4, 5], Schlangen and Garboczi [2], Chang et al [22], Lilliu and van Mier [50], Karihaloo et al [23], or in some recent papers by Vassaux et al [10, 11], Grassl et al [28, 29], Cusatis et”
Monte Carlo Simulations of Mesoscale Fracture of Concrete with Random Aggregates and Pores: a Size Effect Study (2015, methodology): “[18,19] used discrete lattice model to study the size effect of quasi-brittle materials.”