Prediction of central bursting in the process of forward extrusion using the uncoupled ductile failure models

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F15%3APU116384" target="_blank" >RIV/00216305:26210/15:PU116384 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1080/2374068X.2015.1111703" target="_blank" >http://dx.doi.org/10.1080/2374068X.2015.1111703</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/2374068X.2015.1111703" target="_blank" >10.1080/2374068X.2015.1111703</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Prediction of central bursting in the process of forward extrusion using the uncoupled ductile failure models

Popis výsledku v původním jazyce

Forward extrusion is a manufacturing process in which the cross section of product is reduced by forcing it through the die under high pressure. Cold extrusion is most often used in the mass production of cylindrical rods or hollow tubes due to its economic advantages, although it can be used for more complex shapes of cross section. The process is accompanied by excessive amount of plastic deformation and central burst defects, the so-called chevron cracks can occur. These defects are dangerous because of their invisibility on the product’s surface. Therefore, it is important to carry out computational simulations to successfully predict and prevent the central bursting. Solution of this problem is especially influenced by the die cone angle, friction and reduction ratio. In this study, the process is analysed through numerical simulations using the uncoupled ductile failure models which were calibrated and implemented into Abaqus/Explicit by user subroutine VUMAT. Obtained results are compared to experiments conducted on the carbon steel AISI 1045 and predictive potential of the criteria is discussed.

Název v anglickém jazyce

Prediction of central bursting in the process of forward extrusion using the uncoupled ductile failure models

Popis výsledku anglicky

Forward extrusion is a manufacturing process in which the cross section of product is reduced by forcing it through the die under high pressure. Cold extrusion is most often used in the mass production of cylindrical rods or hollow tubes due to its economic advantages, although it can be used for more complex shapes of cross section. The process is accompanied by excessive amount of plastic deformation and central burst defects, the so-called chevron cracks can occur. These defects are dangerous because of their invisibility on the product’s surface. Therefore, it is important to carry out computational simulations to successfully predict and prevent the central bursting. Solution of this problem is especially influenced by the die cone angle, friction and reduction ratio. In this study, the process is analysed through numerical simulations using the uncoupled ductile failure models which were calibrated and implemented into Abaqus/Explicit by user subroutine VUMAT. Obtained results are compared to experiments conducted on the carbon steel AISI 1045 and predictive potential of the criteria is discussed.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

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

2015

Kód důvěrnosti údajů

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

Název periodika

Advances in Materials and Processing Technologies

ISSN

2374-068X

e-ISSN

—

Svazek periodika

1

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

43-48

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85031779671