Publication result detail

Stochastic discrete meso-scale simulations of concrete fracture: comparison to experimental data

ELIÁŠ, J.; VOŘECHOVSKÝ, M.; SKOČEK, J.; BAŽANT, Z.

Original Title

Stochastic discrete meso-scale simulations of concrete fracture: comparison to experimental data

English Title

Stochastic discrete meso-scale simulations of concrete fracture: comparison to experimental data

Type

WoS Article

Original Abstract

The paper presents a discrete meso-scale model for fracture of concrete taking into account random spatial variability of material parameters. Beams of various sizes, with notches of various depths, are simulated numerically to study the combination of energetic and statistical size effects. A substantial part of material randomness is shown to be caused by random locations of the largest aggregates. Further randomness, due to random fluctuations of material parameters, is considered and an effect of introducing a spatially auto-correlated random field is analyzed. The results of the simulations are compared with recently published experimental data on concrete beams in three-point bending. The differences in the role of randomness in beams of various sizes, with different notch depths, are demonstrated, and differences in energy dissipation are discussed.

English abstract

The paper presents a discrete meso-scale model for fracture of concrete taking into account random spatial variability of material parameters. Beams of various sizes, with notches of various depths, are simulated numerically to study the combination of energetic and statistical size effects. A substantial part of material randomness is shown to be caused by random locations of the largest aggregates. Further randomness, due to random fluctuations of material parameters, is considered and an effect of introducing a spatially auto-correlated random field is analyzed. The results of the simulations are compared with recently published experimental data on concrete beams in three-point bending. The differences in the role of randomness in beams of various sizes, with different notch depths, are demonstrated, and differences in energy dissipation are discussed.

Keywords

Discrete model; Lattice-particle models; Energy dissipation; Statistical methods; Size effect; Fracture testing; Notch depth effect; Concrete structures

Key words in English

Discrete model; Lattice-particle models; Energy dissipation; Statistical methods; Size effect; Fracture testing; Notch depth effect; Concrete structures

Authors

ELIÁŠ, J.; VOŘECHOVSKÝ, M.; SKOČEK, J.; BAŽANT, Z.

RIV year

2016

Released

17.01.2015

ISBN

0013-7944

Periodical

ENGINEERING FRACTURE MECHANICS

Volume

135

Number

2015

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

16

Pages count

16

BibTex

@article{BUT114606,
  author="Jan {Eliáš} and Miroslav {Vořechovský} and Jan {Skoček} and Zdeněk P. {Bažant}",
  title="Stochastic discrete meso-scale simulations of concrete fracture: comparison to experimental data",
  journal="ENGINEERING FRACTURE MECHANICS",
  year="2015",
  volume="135",
  number="2015",
  pages="1--16",
  doi="10.1016/j.engfracmech.2015.01.004",
  issn="0013-7944"
}