skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Numerical and experimental investigations into Tailored Welded Blanks formability

Abstract

A Tailor welded blank (TWB) technology gives automotive designers the ability to selectively vary body panel thickness and alloy to optimize the use of material. TWBs offer several notable benefits including decreased part weight, reduced manufacturing costs, increased environmental friendliness, and improved dimensional consistency. In order to take advantage of these benefits, however, designers need to overcome the formability of TWBs and be able to accurately predict unique characteristics related to TWB forming early in the design process. In this paper, a numerical model to predict the forming height dome and a specific forming curve of TWBs is presented. Finite element analyses of standard TWB forming tests (Nakazima) were performed in Arcelor Mittal Auto Application Research Center to determine the interaction between the weaker and the stronger materials. To measure the critical strain at necking a numerical method is used. A comparison of numerical and experimental results highlights a good agreement. The numerical approach offers a considerable gain to obtain specific FLC for all configurations.

Authors:
 [1];  [2];  [3]; ;  [1];  [4]
  1. Arcelor Research, Automotive Applications (France)
  2. (France)
  3. Universite de Technologie de Compiegne, Laboratoire Roberval, UTC/CNRS (France)
  4. Ecole Nationale des Ponts et Chaussees, Ingenierie Mathematiques et Informatiques (France)
Publication Date:
OSTI Identifier:
21057371
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 908; Journal Issue: 1; Conference: NUMIFORM '07: 9. international conference on numerical methods in industrial forming processes, Porto (Portugal), 17-21 Jun 2007; Other Information: DOI: 10.1063/1.2741015; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; COMPARATIVE EVALUATIONS; DESIGN; FINITE ELEMENT METHOD; GAIN; MANUFACTURING; MATERIALS WORKING; STRAINS

Citation Formats

Gaied, Sadok, Universite de Technologie de Compiegne, Laboratoire Roberval, UTC/CNRS, Roelandt, Jean-Marc, Pinard, Fabrice, Schmit, Francis, and Balabane, Mikhael. Numerical and experimental investigations into Tailored Welded Blanks formability. United States: N. p., 2007. Web. doi:10.1063/1.2741015.
Gaied, Sadok, Universite de Technologie de Compiegne, Laboratoire Roberval, UTC/CNRS, Roelandt, Jean-Marc, Pinard, Fabrice, Schmit, Francis, & Balabane, Mikhael. Numerical and experimental investigations into Tailored Welded Blanks formability. United States. doi:10.1063/1.2741015.
Gaied, Sadok, Universite de Technologie de Compiegne, Laboratoire Roberval, UTC/CNRS, Roelandt, Jean-Marc, Pinard, Fabrice, Schmit, Francis, and Balabane, Mikhael. Thu . "Numerical and experimental investigations into Tailored Welded Blanks formability". United States. doi:10.1063/1.2741015.
@article{osti_21057371,
title = {Numerical and experimental investigations into Tailored Welded Blanks formability},
author = {Gaied, Sadok and Universite de Technologie de Compiegne, Laboratoire Roberval, UTC/CNRS and Roelandt, Jean-Marc and Pinard, Fabrice and Schmit, Francis and Balabane, Mikhael},
abstractNote = {A Tailor welded blank (TWB) technology gives automotive designers the ability to selectively vary body panel thickness and alloy to optimize the use of material. TWBs offer several notable benefits including decreased part weight, reduced manufacturing costs, increased environmental friendliness, and improved dimensional consistency. In order to take advantage of these benefits, however, designers need to overcome the formability of TWBs and be able to accurately predict unique characteristics related to TWB forming early in the design process. In this paper, a numerical model to predict the forming height dome and a specific forming curve of TWBs is presented. Finite element analyses of standard TWB forming tests (Nakazima) were performed in Arcelor Mittal Auto Application Research Center to determine the interaction between the weaker and the stronger materials. To measure the critical strain at necking a numerical method is used. A comparison of numerical and experimental results highlights a good agreement. The numerical approach offers a considerable gain to obtain specific FLC for all configurations.},
doi = {10.1063/1.2741015},
journal = {AIP Conference Proceedings},
number = 1,
volume = 908,
place = {United States},
year = {Thu May 17 00:00:00 EDT 2007},
month = {Thu May 17 00:00:00 EDT 2007}
}