Paper Title:
Influence of the Weld on the Mechanical Behaviour of Tailor Welded Blanks
  Abstract

In new car production, an innovative method to produce strong and light panels consists in applying Tailor Welded Blanks (TWBs) in the body-in-white base structure. Since the fusion welding processes can induce significant changes in the material properties of the base materials, an important question is whether the weld bead has a significant influence on the overall behaviour of the welded blanks. In this work, some preliminary conclusions on this subject were achieved based on results of the numerical simulation of simple mechanical tests: tensile, shear and simple bending. The numerical simulations were performed with a fully implicit finite element program (DD3IMP). The results obtained show that for a slight mismatch of properties between the weld and the base materials, no important influence of the weld in the TWBs behaviour is noticed. However, a significant strength reduction can be observed for strong undermatch conditions (lower mechanical properties in the weld) even when the weld bead is very narrow.

  Info
Periodical
Materials Science Forum (Volumes 514-516)
Edited by
Paula Maria Vilarinho
Pages
1493-1500
DOI
10.4028/www.scientific.net/MSF.514-516.1493
Citation
A. J. Baptista, D. M. Rodrigues, L. F. Menezes, "Influence of the Weld on the Mechanical Behaviour of Tailor Welded Blanks", Materials Science Forum, Vols. 514-516, pp. 1493-1500, 2006
Online since
May 2006
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Price
$32.00
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