Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23512
Title: Prediction for forming limit of AL2024T3 sheet based on damage theory using finite element method
Authors: Tang, CY 
Fan, J
Tsui, CP 
Keywords: Anisotropic damage
Elasto-plastic deformation
Finite element method (FEM)
Forming limit diagram (FLD)
Limit strain
Localized necking
Issue Date: 2006
Publisher: Huazhong University of Science and Technology
Source: Acta mechanica solida sinica, 2006, v. 19, no. 2, p. 174-180 How to cite?
Journal: Acta mechanica solida Sinica 
Abstract: This paper presents the application of anisotropic damage theory to the study of forming limit diagram of Al2024T3 aluminum alloy sheet. In the prediction of limiting strains of the aluminum sheet structure, a finite element cell model has been constructed. The cell model consists of two phases, the aluminum alloy matrix and the intermetallic cluster. The material behavior of the aluminum alloy matrix is described with a fully coupled elasto-plastic damage constitutive equation. The intermetallic cluster is assumed to be elastic and brittle. By varying the stretching ratio, the limiting strains of the sheet under biaxial stretching have been predicted by using the necking criterion proposed. The prediction is in good agreement with the experimental findings. Moreover, the finite element cell model can provide information for understanding the microscopic damage mechanism of the aluminum alloy. Over-estimation of the limit strains may result if the effect of material damage is ignored in the sheet metal forming study.
URI: http://hdl.handle.net/10397/23512
ISSN: 0894-9166
EISSN: 1860-2134
DOI: 10.1007/s10338-006-0621-9
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