Publication detail

Fracturing in concrete via lattice-particle model

ELIÁŠ, J. BAŽANT, Z.

Original Title

Fracturing in concrete via lattice-particle model

Type

conference paper

Language

English

Original Abstract

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.

Keywords

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

Authors

ELIÁŠ, J.; BAŽANT, Z.

RIV year

2011

Released

26. 10. 2011

Location

Barcelona

ISBN

978-84-89925-69-4

Book

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

Pages from

1

Pages to

12

Pages count

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"
}