Refinement of a material model for springback after press forming
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F18%3AN0000071" target="_blank" >RIV/26316919:_____/18:N0000071 - isvavai.cz</a>
Result on the web
<a href="http://iopscience.iop.org/article/10.1088/1757-899X/461/1/012088" target="_blank" >http://iopscience.iop.org/article/10.1088/1757-899X/461/1/012088</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/461/1/012088" target="_blank" >10.1088/1757-899X/461/1/012088</a>
Alternative languages
Result language
angličtina
Original language name
Refinement of a material model for springback after press forming
Original language description
The best tool for characterizing the behaviour of sheet metal during press forming is numerical modelling based on the finite element method (FEM). Using this technique, the response of the press-formed part can already be predicted during the process design stage. The main input data for the process simulation include the tool geometry and materials properties and process conditions, such as temperature, pressing velocity, lubrication and others. The resultant shape of the press-formed part is governed predominantly by the shape of the tools and the workpiece material. The input information on the workpiece material has the form of a material model whose accuracy dictates the accuracy of results. Where high-strength steels are used in the automotive industry, one should focus on springback which alters the shape of press-formed parts. Springback is an undesirable change to the part's shape caused by residual stresses being released after its removal from the tool. Tooling designers need to take springback into account by choosing an appropriate material model. Conventional hardening models, such as kinematic and isotropic hardening rules, are not adequate for modelling springback. Instead, more sophisticated models, such as the one introduced by Lemaitre and Chaboche are a better choice. In this paper, the options for measuring and FE modelling of the Bauschinger effect are discussed. The proposed idea was tested on a 1.5 mm sheet of DC01 deep-drawing steel.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/LO1412" target="_blank" >LO1412: Development of the West Bohemian Centre of Materials and Metallurgy</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
5th International Conference Recent Trends in Structural Materials, COMAT 2018
ISBN
—
ISSN
1757-899X
e-ISSN
—
Number of pages
6
Pages from-to
nestránkováno
Publisher name
IOP Publishing Ltd.
Place of publication
Bristol
Event location
Plzeň
Event date
Nov 14, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—