Publication detail

Influence of inertia and material properties on discrete simulation of dynamic fracture of concrete

KVĚTOŇ, J. ELIÁŠ, J.

Original Title

Influence of inertia and material properties on discrete simulation of dynamic fracture of concrete

Type

conference paper

Language

English

Original Abstract

It is well known that the material resistance to fracture increases with increasing strain rate. For relatively slow strain rates, the response is strongly dependent on the material fracture properties such as material strength or fracture energy, whereas with further increase of loading rate, the loading force is getting influenced predominantly by the material inertia. The response of the material changes with strain rate in the sense of loading force as well as character of the crack pattern. The contribution is focused on simulations of fracture experiments at various strain rates. Dynamical concrete fracture is simulated using meso-scale discrete model, i.e. a system of interconnected discrete particles. Material properties in the model are randomly distributed within the volume domain. Similar to quasi-static loading rates, the material randomness influences the dynamic fracture as well. Deterministic and probabilistic simulations are compared and the influence of material parameters and their strain rate dependence are discussed.

Keywords

Strain rate effect; Concrete fracture; Dynamics; Inertia influence; Discrete model; Spatial material randomness

Authors

KVĚTOŇ, J.; ELIÁŠ, J.

Released

31. 12. 2018

ISBN

2452-3216

Periodical

Procedia Structural Integrity

Year of study

2018

Number

13

State

Republic of Italy

Pages from

1367

Pages to

1372

Pages count

6

BibTex

@inproceedings{BUT156403,
  author="Josef {Květoň} and Jan {Eliáš}",
  title="Influence of inertia and material properties on discrete simulation of dynamic fracture of concrete",
  booktitle="ECF22 - Loading and Environmental effects on Structural Integrity",
  year="2018",
  journal="Procedia Structural Integrity",
  volume="2018",
  number="13",
  pages="1367--1372",
  doi="10.1016/j.prostr.2018.12.286",
  issn="2452-3216"
}