Numerical study of specimen with steel inclusion: Influence of interfacial transition zone

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F22%3A00567145" target="_blank" >RIV/68081723:_____/22:00567145 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26110/23:PU146669

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.prostr.2022.12.126" target="_blank" >http://dx.doi.org/10.1016/j.prostr.2022.12.126</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2022.12.126" target="_blank" >10.1016/j.prostr.2022.12.126</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical study of specimen with steel inclusion: Influence of interfacial transition zone

Popis výsledku v původním jazyce

In this paper, the influence of the interfacial transition zone (ITZ) between steel inclusion and fine-grained cement-based composite on fracture behaviour is investigated. Specimens of the nominal dimensions 40 × 40 × 160 mm with the steel inclusion of the prismatic shape with nominal dimensions 8 × 8 × 40 mm were provided with an initial central edge notch with a depth 12 mm. The aim of this paper is to analyse the behaviour of such specimen by means of numerical modelling by finite element method (Ansys software). A simplified 2D model (plane strain) based on the fracture test configuration was created. The crack propagation assessment was based on the criterion of the average value of tangential stress ????????θθ calculated over certain distance d in dependence on the polar coordinate θ. It is assumed that the crack is initiated when the average stress ????̅θθ(????0) reaches its critical value ????̅θθ,c(????0), which depends on the fracture toughness ????Ic of the material and on the distance d. From the detailed numerical analysis of the described fracture test, we concluded that the crack propagation path depends strongly on the fracture properties of ITZ. The central inclusion works as an obstacle to crack propagation only in the initial stage of failure. The mechanical fracture parameters of the ITZ strongly influence the overall fracture behavior of test specimens.

Název v anglickém jazyce

Numerical study of specimen with steel inclusion: Influence of interfacial transition zone

Popis výsledku anglicky

In this paper, the influence of the interfacial transition zone (ITZ) between steel inclusion and fine-grained cement-based composite on fracture behaviour is investigated. Specimens of the nominal dimensions 40 × 40 × 160 mm with the steel inclusion of the prismatic shape with nominal dimensions 8 × 8 × 40 mm were provided with an initial central edge notch with a depth 12 mm. The aim of this paper is to analyse the behaviour of such specimen by means of numerical modelling by finite element method (Ansys software). A simplified 2D model (plane strain) based on the fracture test configuration was created. The crack propagation assessment was based on the criterion of the average value of tangential stress ????????θθ calculated over certain distance d in dependence on the polar coordinate θ. It is assumed that the crack is initiated when the average stress ????̅θθ(????0) reaches its critical value ????̅θθ,c(????0), which depends on the fracture toughness ????Ic of the material and on the distance d. From the detailed numerical analysis of the described fracture test, we concluded that the crack propagation path depends strongly on the fracture properties of ITZ. The central inclusion works as an obstacle to crack propagation only in the initial stage of failure. The mechanical fracture parameters of the ITZ strongly influence the overall fracture behavior of test specimens.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Procedia Structural Integrity

ISBN

—

ISSN

2452-3216

e-ISSN

—

Počet stran výsledku

8

Strana od-do

1000-1007

Název nakladatele

Elsevier

Místo vydání

Amsterdam

Místo konání akce

Funchal

Datum konání akce

27. 6. 2022

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

001248864600129