Stochastic lattice simulations of flexural failure in concrete beams

Jan Eliáš, Miroslav Vořechovský, Zdenek P Bazant

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

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 and studied for two different correlation lengths. The study is focused on maximal load and energy dissipation during the progressive 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.

Original languageEnglish (US)
Title of host publicationProceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013
Pages1340-1351
Number of pages12
StatePublished - Jul 15 2013
Event8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013 - Toledo, Spain
Duration: Mar 11 2013Mar 14 2013

Publication series

NameProceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013

Other

Other8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013
CountrySpain
CityToledo
Period3/11/133/14/13

Keywords

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

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

Fingerprint Dive into the research topics of 'Stochastic lattice simulations of flexural failure in concrete beams'. Together they form a unique fingerprint.

Cite this