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

N Anderson; D Brown; R McMurray; AG Leacock

doi:10.1063/1.3589718

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

N Anderson, D Brown, R McMurray, AG Leacock

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1435-1440
Journal	AIP Conference Proceedings
Volume	1353
DOIs	https://doi.org/10.1063/1.3589718
Publication status	Published (in print/issue) - 27 Apr 2011

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10.1063/1.3589718

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title = "The influence of uniaxial prestrain on biaxial r-values in 7075-O aluminium alloy",

abstract = "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.",

author = "N Anderson and D Brown and R McMurray and AG Leacock",

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AU - Anderson, N

AU - Brown, D

AU - McMurray, R

AU - Leacock, AG

PY - 2011/4/27

Y1 - 2011/4/27

N2 - 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.

AB - 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.

U2 - 10.1063/1.3589718

DO - 10.1063/1.3589718

M3 - Article

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VL - 1353

SP - 1435

EP - 1440

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

ER -

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

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