Detail publikace

Fracturing in concrete via lattice-particle model

ELIÁŠ, J. BAŽANT, Z.

Originální název

Fracturing in concrete via lattice-particle model

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Numerical simulation is used to explore the behavior of concrete beams of different sizes and different notch lengths, loaded in three-point bending. The entire range of notch depth is studied. One limit case is type 1 fracture, which occurs when the notch depth is zero and the crack initiates from a smooth surface (this is the case of the modulus of rupture test). Another limit is type 2 fracture, which occurs for deep enought notches. Both cases exhibit very different size effects. The fracture is simulated numerically with a robust mesolevel lattice-particle model. The results shed light on the transitional behavior in which the notch depth is non-zero but not deep enough for develeping the the type 2 size effect dominated by energy release from the structure. In agreement with experimental observations and theoretical predictions, the numerical results show evidence of a decreasing macroscopic fracture energy as the ligament gets very short.

Klíčová slova

Fracture, concrete, lattice-particle model, size effect, notch variability

Autoři

ELIÁŠ, J.; BAŽANT, Z.

Rok RIV

2011

Vydáno

26. 10. 2011

Místo

Barcelona

ISBN

978-84-89925-69-4

Kniha

2nd International Conference on Particle-Based Methods - Fundamentals and Applications (PARTICLES 2011)

Strany od

1

Strany do

12

Strany počet

12

BibTex

@inproceedings{BUT89512,
  author="Jan {Eliáš} and Zdeněk P. {Bažant}",
  title="Fracturing in concrete via lattice-particle model",
  booktitle="2nd International Conference on Particle-Based Methods - Fundamentals and Applications (PARTICLES 2011)",
  year="2011",
  pages="1--12",
  address="Barcelona",
  isbn="978-84-89925-69-4"
}