Ductile fracture criteria in prediction of slant fracture

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F16%3APU120599" target="_blank" >RIV/00216305:26210/16:PU120599 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.7712/100016.2291.5668" target="_blank" >http://dx.doi.org/10.7712/100016.2291.5668</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.7712/100016.2291.5668" target="_blank" >10.7712/100016.2291.5668</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ductile fracture criteria in prediction of slant fracture

Popis výsledku v původním jazyce

The ductile fracture of metallic materials is consequence of damage accumulation after straining accompanied by large plastic deformations. It is significantly dependent on the microstructure of particular material and micromechanical defects as vacancies or second phase particles. The nucleation, growth and coalescence of voids is the fracture mechanism which applies in high values of stress triaxiality. The shear mechanism appears in the region of negative stress triaxialities. Finally, the combination of both fracture mechanisms occurs in cases of moderate stress triaxialities. The crack or fracture surface in specimens or real components is often tilted approximately 45 degrees to applied load. This slant fracture is driven by shear mechanism and occurs in the plane of maximum shear stress. It was shown that coupled ductile fracture criteria are convenient for the prediction of slant fracture in finite element simulations. There is conducted analysis of slant fracture prediction ability of two chosen coupled and uncoupled criteria in the present paper. Those criteria were calibrated and applied to two different metallic materials. The prediction is validated on those calibration fracture tests at which the slant fracture was observed.

Název v anglickém jazyce

Ductile fracture criteria in prediction of slant fracture

Popis výsledku anglicky

The ductile fracture of metallic materials is consequence of damage accumulation after straining accompanied by large plastic deformations. It is significantly dependent on the microstructure of particular material and micromechanical defects as vacancies or second phase particles. The nucleation, growth and coalescence of voids is the fracture mechanism which applies in high values of stress triaxiality. The shear mechanism appears in the region of negative stress triaxialities. Finally, the combination of both fracture mechanisms occurs in cases of moderate stress triaxialities. The crack or fracture surface in specimens or real components is often tilted approximately 45 degrees to applied load. This slant fracture is driven by shear mechanism and occurs in the plane of maximum shear stress. It was shown that coupled ductile fracture criteria are convenient for the prediction of slant fracture in finite element simulations. There is conducted analysis of slant fracture prediction ability of two chosen coupled and uncoupled criteria in the present paper. Those criteria were calibrated and applied to two different metallic materials. The prediction is validated on those calibration fracture tests at which the slant fracture was observed.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LO1202" target="_blank" >LO1202: NETME CENTRE PLUS</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

ECCOMAS Congress 2016

ISBN

978-618-82844-0-1

ISSN

—

e-ISSN

—

Počet stran výsledku

12

Strana od-do

6699-6710

Název nakladatele

Neuveden

Místo vydání

Neuveden

Místo konání akce

Crete Island, Greece

Datum konání akce

5. 6. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—