Detail publikačního výsledku

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

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

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2016

Vydáno

17.01.2015

ISSN

0013-7944

Periodikum

ENGINEERING FRACTURE MECHANICS

Svazek

135

Číslo

2015

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

16

Strany počet

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"
}