Publication detail

Modelling the tensile softening behaviour of concrete in LS-Dyna software

KRÁL, P. HRADIL, P. KALA, J.

Original Title

Modelling the tensile softening behaviour of concrete in LS-Dyna software

Type

conference paper

Language

English

Original Abstract

The problematic of the paper focuses on the numerical modelling of tensile softening behaviour of concrete. For this purpose, the explicit finite element software LS-Dyna contains several nonlinear material models. The tensile softening behaviour of a total of four selected explicit nonlinear concrete models (namely the Concrete Damage models Release 1 and Release 3, the Winfrith Concrete model and the Continuous Surface Cap model) is tested within numerical simulations of this paper. The task used within the numerical simulations is represented by so-called UUT (Unconfined Uniaxial Tension) test. For this test, specific concrete specimens are used. The numerical simulations are performed with using explicit finite elements. Results of numerical simulations are shown by l-d (load-displacement) diagrams of the UUT test for individual nonlinear concrete models. These results are compared with results obtained from the laboratory measurements for the purpose of validation of the numerical models. The comparisons enable to obtain information about differences between individual nonlinear concrete material models in terms of the tensile softening behaviour. They also show the accuracy of approximations of experimental results by numerical simulations. Based on the comparisons, it can be concluded which nonlinear material models are best for the description of behaviour of concrete in uniaxial tension. Based on the obtained results, it can further be discussed the suitability of nonlinear concrete models in terms of other tests for measuring the tensile mechanical properties of concrete.

Keywords

LS-Dyna, laboratory measurement, concrete, material nonlinearities, uniaxial tension, explicit simulations

Authors

KRÁL, P.; HRADIL, P.; KALA, J.

Released

9. 12. 2020

Publisher

IOP Publishing

Location

Prague, Czech Republic

ISBN

1757-899X

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

960

Number

4

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

7

Pages count

7

URL

https://iopscience.iop.org/article/10.1088/1757-899X/960/4/042084

Full text in the Digital Library

http://hdl.handle.net/11012/196559

BibTex

@inproceedings{BUT168384,
  author="Petr {Král} and Petr {Hradil} and Jiří {Kala}",
  title="Modelling the tensile softening behaviour of concrete in LS-Dyna software",
  booktitle="IOP Conference Series: Materials Science and Engineering (WMCAUS 2020)",
  year="2020",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="960",
  number="4",
  pages="1--7",
  publisher="IOP Publishing",
  address="Prague, Czech Republic",
  doi="10.1088/1757-899X/960/4/042084",
  issn="1757-899X",
  url="https://iopscience.iop.org/article/10.1088/1757-899X/960/4/042084"
}