Paper Titles
Temperature-Dependent Shear Strain Localization of Aluminium-Lithium Alloy in Uniaxial Compression Using Zerilli-Armstrong and Gradient Plasticity Models
p.789
Overview of Forming and Formability Issues for High Volume Aluminium Car Body Panels
p.795
Mapping the Crystal Orientation Distribution Function to Discrete Orientations in Crystal Plasticity Finite Element Forming Simulations of Bulk Materials
p.803
Study of Microstructure and Texture Evolution Using In-Situ EBSD Investigations and SE Imaging in SEM
p.809
Damage-Based Finite Element Modeling of Stretch Flange Forming of Aluminium-Magnesium Alloy
p.815
Damage Investigation in Aluminium Alloys by X Ray Tomography
p.821
Modelling of Ductile Fracture in the Presence of Two Populations of Voids - Applications to Aluminium Alloys
p.829
Precipitation and Mechanical Properties of Supersaturated Al-Zn-Mg Alloys Processed by Severe Plastic Deformation
p.835
Influence of Temperature and Strain Rate on the Plastic Deformation of Two Commercial High Strength Al Alloys
p.841

Damage-Based Finite Element Modeling of Stretch Flange Forming of Aluminium-Magnesium Alloy

Article Preview

Abstract:

The numerical simulation of the stretch flange forming operation of Al-Mg sheet AA5182 was conducted with an explicit finite element code, LS-DYNA. A Gurson-Tvergaard- Needleman (GTN)-based material model was used in the finite element calculation. A strain controlled void nucleation rule was adopted with void nucleating particle fraction measured directly from the as-received Al-Mg sheet. Parametric study was performed to examine the effect of void nucleation strain on the predicted onset of ductile fracture. Critical porosity levels determined through quantitative metallurgical analysis were adopted to predict the commencement of void coalescence in the GTN model. The numerical results were compared to the experimental ones and an applicable void nucleation strain was suggested.

You might also be interested in these eBooks
Aluminium Alloys 2006 - ICAA10 View Preview

Info:

Periodical:

Materials Science Forum (Volumes 519-521)

Pages:

815-820

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.519-521.815

Citation:

Cite this paper

Online since:

July 2006

Authors:

Zeng Tao Chen, Michael J. Worswick, David J. Lloyd

Keywords:

Al-Mg, Damage, Ductile Fracture, Finite Element Model (FEM), Formability, Sheet Metal Forming, Stretch Flange

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2006 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] A.K. Pilkey: Effect of second phase particle clustering on aluminum-silicon alloy sheet formability, Ph.D. Thesis (Carleton University, Ottawa, Canada, 1997).

DOI: 10.22215/etd/1997-03710

Google Scholar

[2] K. Spencer, S.F. Corbin and D.J. Lloyd: The influence of iron content on the plane strain fracture behaviour of AA5754 Al-Mg sheet alloys, Mater. Sci. Engng., A325 (2002), 394-404.

DOI: 10.1016/s0921-5093(01)01481-2

Google Scholar

[3] W.B. Lievers, A.K. Pilkey and D.J. Lloyd: The influence of iron content on the bendability of AA6111 sheet, Mater. Sci. Engng., A361 (2003) 312-320.

DOI: 10.1016/s0921-5093(03)00535-5

Google Scholar

[4] Z.T. Chen: The role of heterogeneous particle distribution in the prediction of ductile fracture, Ph. D. Thesis (University of Waterloo, Canada 2004).

Google Scholar

[5] M.J. Finn: Private communications (2001).

Google Scholar

[6] A.L. Gurson: Continuum Theory of Ductile Rupture by Void Nucleation and Growth - Part I. Yield Criteria and Flow Rules for Porous Ductile Media. J. Engng. Mater. Tech., 99 (1977), 2-15.

DOI: 10.2172/7351470

Google Scholar

[7] V. Tvergaard: Influence of voids on shear band instabilities under plane strain conditions, Int. J. Fracture, 17 (1981), 389-407.

DOI: 10.1007/bf00036191

Google Scholar

[8] V. Tvergaard and A. Needleman: Analysis of the cup-cone fracture in a round tensile test bar, Acta Metall., 32 (1984), 157-169.

DOI: 10.1016/0001-6160(84)90213-x

Google Scholar

[9] C.C. Chu and A. Needleman: Void nucleation effects in biaxially stretched sheets, J. Engng. Mater. Tech., 102 (1980), 249-256.

DOI: 10.1115/1.3224807

Google Scholar

[10] M.J. Worswick and P. Pelletier: Numerical simulation of ductile fracture during high strain rate deformation. Eur. Phys. J. AP, 4 (1998), 257-267.

DOI: 10.1051/epjap:1998269

Google Scholar