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KRÁL, P. HRADIL, P. KALA, J.
Originální název
Modelling the tensile softening behaviour of concrete in LS-Dyna software
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
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.
Klíčová slova
LS-Dyna, laboratory measurement, concrete, material nonlinearities, uniaxial tension, explicit simulations
Autoři
KRÁL, P.; HRADIL, P.; KALA, J.
Vydáno
9. 12. 2020
Nakladatel
IOP Publishing
Místo
Prague, Czech Republic
ISSN
1757-899X
Periodikum
IOP Conference Series: Materials Science and Engineering
Ročník
960
Číslo
4
Stát
Spojené království Velké Británie a Severního Irska
Strany od
1
Strany do
7
Strany počet
URL
https://iopscience.iop.org/article/10.1088/1757-899X/960/4/042084
Plný text v Digitální knihovně
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" }