Conference Publication Details
Mandatory Fields
Otegi, N,Galdos, L,Hurtado, I,Leen, SB,Menary, G
Analysis of the Capabilities of a Hyperbolic Constitutive Equation for Al-5083 Superplastic Aluminium Alloy
14TH INTERNATIONAL CONFERENCE ON MATERIAL FORMING ESAFORM, 2011 PROCEEDINGS
2011
November
Published
1
WOS: 1 ()
Optional Fields
Superplastic forming cavitation Al5083 mechanisms-based constitutive equations HYDROSTATIC-PRESSURE CAVITATION GROWTH MECHANISMS FAILURE
1574
1579
This paper describes the application of a hyperbolic, mechanisms-based constitutive equation set, modified to incorporate the effect of cavitation, to the prediction of the superplastic behaviour of a commercial Al-5083 superplastic aluminium alloy. The development of an algorithm for multi-stage identification of the complex set of constitutive parameters is presented and this approach is applied to characterise the constitutive behaviour of the Al-5083 at 500 degrees C, based on constant strain-rate tensile test data. A large deformation, multiaxial formulation of the constitutive equation set is implemented and applied to finite element modelling of a bulge test forming process to characterise the cavitation evolution behaviour in the bulge test for different back pressure conditions.
10.1063/1.3589741
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