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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
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" }