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The influence of uniaxial prestrain on biaxial r-values in 7075-O aluminium alloy

Anderson, N, Brown, D, McMurray, R and Leacock, AG (2011) The influence of uniaxial prestrain on biaxial r-values in 7075-O aluminium alloy. AIP Conference Proceedings, 1353 . pp. 1435-1440. [Journal article]

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URL: http://dx.doi.org/10.1063/1.3589718

DOI: 10.1063/1.3589718


Biaxial test methods have been used to determine, not only yield behaviour under biaxial conditions, but also the strain response. This paper examines the influence of uniaxial prestrain upon the biaxial r‐value by extending the disc compression test procedure proposed by Barlat et al. [1]. The extension involved the use of digital image measurements of in‐plane strains. The material examined was a 7075‐O condition aluminium alloy. The results of the experimental programme indicated that the biaxial r‐value is unaffected by uniaxial prestrain. When using the disc compression test, the mode of deformation and therefore the biaxial r‐value were found to be very sensitive to the prevailing friction conditions.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Advanced Metal Forming
ID Code:23276
Deposited By: Dr Alan Leacock
Deposited On:12 Sep 2012 09:42
Last Modified:14 Aug 2015 14:44

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