Paper Title:
Theoretical and Experimental Evaluation of the Formability of Anisotropic Zinc Sheets
  Abstract

. Formability of metal sheet has been widely studied for the past 40 years. This study leads to the well known Forming Limit Diagram (FLD) proposed by Keeler and Backhofen [1]. Such a diagram needs typical drawing and stretching experiments to be achieved. Lots of different metals have been considered as steel, aluminium, titanium or magnesium alloys [2]. Despite of the large amount of papers about sheet metal forming, few deal with Zinc sheets. The material has an anisotropic mechanical response due to its hexagonal crystallographic lattice and its microstructural texture. In the presented work, Nakazima and tensile tests have been performed for different mechanical orientations (0°, 45° and 90° angle to the rolling direction) in order to characterise this typical response. A high anisotropic behaviour has been noticed for the hardening and for the critical strains. The FLD is therefore a function of the orientation. Moreover thickness sensitivity is observed and leads to some criticisms about the plane stress assumption usually used in the FLD predictive models [3, 4]. The Modified Maximum Force Criterion (MMFC) is evaluated, and discussed. Then, this model is compared to a damage model used in [5] within an FEM formulation.

  Info
Periodical
Main Theme
Edited by
J.R. Duflou, R. Clarke, M. Merklein, F. Micari, B. Shirvani and K. Kellens
Pages
390-395
DOI
10.4028/www.scientific.net/KEM.473.390
Citation
Y. Jansen, R. E. Logé, M. Milesi, S. Manov, E. Massoni, "Theoretical and Experimental Evaluation of the Formability of Anisotropic Zinc Sheets", Key Engineering Materials, Vol. 473, pp. 390-395, 2011
Online since
March 2011
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: Yann Jansen, Roland E. Logé, Marc Milesi, Stephan Manov, Elisabeth Massoni
Formability of Metallic Materials
Abstract:Sheet metal formability has been studied for a half century. The sheet formability is mostly described by the Forming Limit Diagram (FLD). A...
65
Authors: Jun He Lian, Deok Chan Ahn, Dong Chul Chae, Sebastian Münstermann, Wolfgang Bleck
Chapter 1: Formability of Metallic Materials
Abstract:A comparative study on the formability prediction of a ferritic steel sheet by anisotropic models based on associated flow rule and...
150