Publication detail

Simulations of Dynamic Concrete Fracture with Brazilian Splitting Test

KVĚTOŇ, J. ELIÁŠ, J.

Original Title

Simulations of Dynamic Concrete Fracture with Brazilian Splitting Test

Type

conference paper

Language

English

Original Abstract

Concrete fracture is a phenomenon that material science deals with since its very beginning. With increase of computational capacity, linear models previously used for the description of material behavior in the vicinity of stress concentrators are being replaced with complex models using nonlinear material laws. Such models can be continuous, but for the better description of material behavior at the scale, where heterogeneities are recognized, discrete formulations are usually adopted. The contribution presents simulations of concrete fracture in dynamic regime using rigid body spring network. The material is represented by interconnected rigid cells of convex polyhedral shape. In the dynamic regime, for relatively slow loading rates, use of implicit time integration scheme for solving system of equations is quite common. For faster loading rates, the explicit scheme is usually used, however, in the presented contribution, the implicit scheme is conveniently used as well. The time step length is then not restricted by the stability of the system, but only by the desired accuracy. Model is applied to dynamic simulations of Brazilian splitting discs experimentally investigated in literature.

Keywords

Concrete Fracture; Implicit Dynamics; Discrete Modeling; Meso-scale; Strain Rate

Authors

KVĚTOŇ, J.; ELIÁŠ, J.

Released

6. 8. 2018

Publisher

Scien Tech Publisher

Location

Roma, Italy

ISBN

2374-3948

Periodical

International Conference on Computational Methods

Year of study

5

Number

1

State

Republic of Italy

Pages from

621

Pages to

626

Pages count

5

BibTex

@inproceedings{BUT151408,
  author="Josef {Květoň} and Jan {Eliáš}",
  title="Simulations of Dynamic Concrete Fracture with Brazilian Splitting Test",
  booktitle="Proceedings of the International Conference on Computational Methods",
  year="2018",
  journal="International Conference on Computational Methods",
  volume="5",
  number="1",
  pages="621--626",
  publisher="Scien Tech Publisher",
  address="Roma, Italy",
  issn="2374-3948"
}