Detail publikace

Lattice modeling of aggregate interlocking in concrete

ELIÁŠ, J. STANG, H.

Originální název

Lattice modeling of aggregate interlocking in concrete

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

In this paper, we study a mixed-mode fracture process using a conventional two dimensional lattice model with incorporated meso-level internal material structure. Simple elasto-brittle elements of the network are divided into three phases according to a projected grain layout. The stiffness of any element that fulfils a failure criterion is removed. As a new feature of the otherwise standard lattice approach, we added the recovery of normal stiffness when a severed element enters the compressive regime. This enhancement enables capture of the shear resistance of an existing crack caused by crack roughness, i.e. what is termed aggregate interlocking. We demonstrate this enhancement via the simulation of mixed-mode experiments on concrete performed at a laboratory at the Technical University of Denmark. Double notched concrete specimens were initially pre-cracked in tension. Then, various combinations of tensile and shear load (normal and tangential to the crack plane) were applied. Simulated crack patterns and load–displacement curves are compared to the experimental observations.

Klíčová slova

Lattice model - Elasto-brittle elements - Non-proportional load-path - Stiffness recovery - Aggregate interlocking

Autoři

ELIÁŠ, J.; STANG, H.

Rok RIV

2012

Vydáno

28. 2. 2012

Místo

Nizozemsko

ISSN

0376-9429

Periodikum

INTERNATIONAL JOURNAL OF FRACTURE

Ročník

175

Číslo

2

Stát

Nizozemsko

Strany od

1

Strany do

11

Strany počet

11

URL

http://link.springer.com/article/10.1007/s10704-012-9677-3

BibTex

@article{BUT89882,
  author="Jan {Eliáš} and H. {Stang}",
  title="Lattice modeling of aggregate interlocking in concrete",
  journal="INTERNATIONAL JOURNAL OF FRACTURE",
  year="2012",
  volume="175",
  number="2",
  pages="1--11",
  issn="0376-9429",
  url="http://link.springer.com/article/10.1007/s10704-012-9677-3"
}