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Finite element modelling of damage in superplastic forming of a titanium alloy

Leen, Sean B.
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Identifiers
http://hdl.handle.net/10379/5402
https://doi.org/10.13025/19169
Repository DOI
10.1007/s12289-009-0569-7
Publication Date
2009-12-15
Keywords
Superplastic forming, Damage mechanics, Failure prediction, Ti-6Al-4V
Type
Article
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Citation
Leen, SB,Stoyanov, M (2009) 'Finite element modelling of damage in superplastic forming of a titanium alloy'. Int J Mater Form, 2 :287-290.
Abstract
This paper describes the application of a continuum damage mechanics methodology to the prediction of failure during superplastic forming of Ti-6Al-4V. A power law constitutive relationship is employed within a geometrically non-linear finite element model of the forming process and a user subroutine is developed to implement the damage mechanics approach. The damage constants are identified from uniaxial rupture strains from constant strain-rate tests. The multiaxial implementation is successfully used to predict damage evolution during forming of a truncated cone and is shown to predict results consistent with the experimental results from forming trials.
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Publisher
Springer Verlag
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Attribution-NonCommercial-NoDerivs 3.0 Ireland
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Mechanical Engineering (Scholarly Articles)