Publication detail

Stochastic lattice simulations of flexural failure in concrete beams

ELIÁŠ, J. VOŘECHOVSKÝ, M. BAŽANT, Z.

Original Title

Stochastic lattice simulations of flexural failure in concrete beams

Type

conference paper

Language

English

Original Abstract

The contribution employs meso-level discrete numerical model to approximate mechanics of concrete failure. The model represents the material by assembly of rigid-like particles interconnected by nonlinear bonds with strain softening. Spatial material randomness is introduced by varying the local meso-level strengths and fracture energies of inter-particle bonds. The variations are modeled using realizations of stationary autocorrelated random field abd studied for two different correlation lengths. The study is focused on maximal load and energy dissipation during the progresive failure. It is found that material fluctuations in notched beams do not influence the mean values of maximal load and dissipated energy, but they influence their variance. In the case of unnotched beams, the mean of maximal load decreases with decreasing correlation length of material properties; however, the coefficient of variation of the peak load increases.

Keywords

Lattice-particle model, Spatial randomness, Bending, Fracture energy

Authors

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

RIV year

2013

Released

11. 3. 2013

Location

Toledo, Španělsko

ISBN

978-84-941004-0-6

Book

Fracture Mechanics of Concrete and Concrete Structures

Pages from

1

Pages to

12

Pages count

12

BibTex

@inproceedings{BUT102236,
  author="Jan {Eliáš} and Miroslav {Vořechovský} and Zdeněk P. {Bažant}",
  title="Stochastic lattice simulations of flexural failure in concrete beams",
  booktitle="Fracture Mechanics of Concrete and Concrete Structures",
  year="2013",
  pages="1--12",
  address="Toledo, Španělsko",
  isbn="978-84-941004-0-6"
}