Monte Carlo simulations of mesoscale fracture modelling of concrete with random aggregates and pores
By Xiaofeng Wang, Zhenjun Yang, J. R. Yates, Andrey P. Jivkov, Chuanzeng Zhang. 2015
334 citations recorded by the source corpus.
Abstract A procedure for generating two-dimensional heterogeneous meso-scale concrete samples is developed, in which the multi-phasic features including the shape, size, volume fraction and spatial distribution of aggregates and pores are randomised. Zero-thickness cohesive interface elements with softening traction–separation relations are pre-inserted within solid element meshes to simulate complex crack initiation and propagation. Extensive Monte Carlo simulations (MCS) of uniaxial tension tests were carried out to investigate the effects of key multi-phasic features on the fracture patterns and load-carrying capacities. It is found that the fracture behaviour and stress-displacement responses of the numerical specimens are highly dependent on the random mesostructures, especially the post-peak softening responses. The specimens fail with either one or two macro-cracks, regardless of the shapes and volume fractions of aggregates and pores. Assuming that the aggregate–mortar interface is weaker than the mortar, using polygonal rather than circular or elliptical aggregates, or increasing the aggregate volume fraction will reduce the tensile strength of specimens. The porosity is found to have severely adverse effects on the specimen strength and cannot be neglected in mesoscale fracture modelling of concrete.
Subfields: Civil and Structural Engineering, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/496e1f06553b1b1038917c9824aa6672153d05c7
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In Civil and Structural Engineering
- Andrey P. Jivkov
- Xiaofeng Wang
- I. Rasoolan
- Mirshad Maleki
- A. Khajehdezfuly
- Zhenjun Yang
- Chongmin Song
- E. Ooi
In Mechanics of Materials
- Andrey P. Jivkov
- Xiaofeng Wang
- I. Rasoolan
- Mirshad Maleki
- A. Khajehdezfuly
- Zhenjun Yang
- Chongmin Song
- E. Ooi
Citations in the corpus
- Monte Carlo Simulations of Mesoscale Fracture of Concrete with Random Aggregates and Pores: a Size Effect Study (2015, methodology): “Based on our previous study of mesoscale fracture modelling [23], the element length of 1 mm, the loading time of 0.”
- On the effect of ITZ thickness in meso-scale models of concrete (2020, background): “From the perspective of analysing structural components, the meso-structural models offer a practical way to study damage and fracture of concrete, with explicit representation of micro-cracks initiation and propagation [4,16,18].”