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Application of a continuum damage mechanics (CDM)-based model for predicting formability of warm formed aluminium alloy
File(s)
Author(s)
Bai, Q
Mohamed, M
Shi, Z
Lin, J
Dean, T
Type
Journal Article
Abstract
Predicting formability of sheet metal in warm forming condition is a challenge since warm forming is a thermo-mechanical process and formability is varied with temperature and strain rate. Current standard forming limit curves (FLCs) which have been established for fixed values of temperatures and strain rates cannot be used directly to predict the formability of sheet metal in warm/hot forming processes. In this paper, a series of experiment were carried out to establish FLCs for AA5754 at a temperature range of 200–300 °C and a forming rate of 20–300 mm/s using Argus system. Based on a set of continuum damage mechanics (CDM)-based theories, the constitutive model is implemented in Ls-Dyna user subroutine. Finite element (FE) result of strain distribution was compared with the experimental result from Argus system in terms of different strain paths. FE results have a good agreement with the experimental results, which indicates that the FE model developed can be used to predict formability for warm forming process.
Date Issued
2016-06-22
Date Acceptance
2016-04-26
Citation
International Journal of Advanced Manufacturing Technology, 2016, 88 (9-12), pp.3437-3446
URI
DOI
ISSN
0268-3768
Publisher
Springer
Start Page
3437
End Page
3446
Journal / Book Title
International Journal of Advanced Manufacturing Technology
Volume
88
Issue
9-12
Copyright Statement
© Springer-Verlag London 2016. The final publication is available at Springer via http://dx.doi.org/10.1007/s00170-016-8853-4
Sponsor
Technology Strategy Board
Grant Number
BD498D
Subjects
Science & Technology
Technology
Automation & Control Systems
Engineering, Manufacturing
Engineering
Aluminium alloy
Forming limit curves
Major strain
Continuum damage mechanics (CDM)
FE simulation
CONSTITUTIVE-EQUATIONS
METAL
09 Engineering
08 Information And Computing Sciences
01 Mathematical Sciences
Industrial Engineering & Automation
Publication Status
Published