Paper Title:
Determination of Friction Coefficients for the FE-Analysis of Sheet Forming of Tailored Welded Blanks
  Abstract

The finite element analysis of sheet forming processes needs precise and reproducible data of the tribological conditions, which influence the material flow during the process. In this work the friction coefficient and its dependency on the hardness and surface topography of the blank are investigated. The selected materials are four steels with different surface qualities and coatings, FeP04, ZStE340, DP450 and TRIP800, which are joined by laser welding. Moreover, each material both with and without weld seam, was tested at three different values of normal contact pressure in a strip drawing test. The topography of both the base material and the weld line was obtained by measuring the surface roughness and implementing the data in a surface analysis software. Micro-hardness profiles along the tailored welded blanks were also determined. The strip drawing test was used to measure the friction coefficient between sheet metal and tool both in the case of tailored welded blanks and base material. The comparison between the results obtained for base materials and tailored welded blanks shows that the presence of the weld seam causes a clear increase of the friction between blank and tool.

  Info
Periodical
Main Theme
Edited by
M. Geiger, J. Duflou, H.J.J. Kals, B. Shirvani and U.P. Singh
Pages
313-320
DOI
10.4028/www.scientific.net/AMR.6-8.313
Citation
M. Tolazzi, M. Merklein, "Determination of Friction Coefficients for the FE-Analysis of Sheet Forming of Tailored Welded Blanks", Advanced Materials Research, Vols. 6-8, pp. 313-320, 2005
Online since
May 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: K. Lamprecht, Manfred Geiger
Abstract:Within the past decades tailored welded blanks have become a key product for the construction of lightweight automotive bodies. Following...
689
Authors: Rui M. Leal, Bruno M. Chaparro, Jorge M. Antunes, Pedro Vilaça, Dulce Maria Rodrigues, Altino Loureiro
Abstract:The mechanical behaviour of homogeneous and inhomogeneous FSW aluminium tailored blanks is analysed in this paper. The heterogeneity in...
961
Authors: Kittiphat Rattanachan, K. Sirivedin, Chatchapol Chungchoo
Chapter 2: Materials Science and Materials Physics
Abstract:This paper is focused on single point incremental forming (SPIF) of a tailored welded blanks (TWBs) that produced by laser welding process....
339
Authors: Xiao Gang Li, Ru Jin, Yong Qiang Zhang, Li Xian Liu, Jian Qiang Zhang, Ai Min Zhao
Chapter 9: Materials Processing Technology and Applied Research
Abstract:170P1/DX54D+Z was a kind of laser-welding-tailored-blanks with unequal thickness. But it usually occurred poor welding seam especially when...
869