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Bending behavior to fracture of an aluminium alloy involving pre-strain
journal contribution
posted on 2017-01-01, 00:00 authored by Adrien Pradeau, S Thuillier, Jeong YoonJeong YoonThe work associated to this abstract is focused on the modelling of an aluminium alloy under the shape of sheet. It characterizes the mechanical behaviour up to rupture of an AA6016 alloy, taking into account the anisotropy and the hardening of the metal. The mechanical tests on which the model is based on consist of uniaxial tension, simple shear and hydraulic bulging performed at room temperature up to rupture, except for the simple shear. The numerical model is constituted of three parts. The choice of the model is suited for ductile fracture and allows for high flexibility, thanks to a total of 21 material parameters. The material parameter identification is realised through an inverse methodology. The objective of such an approach is to minimize iteratively the gap between the experimental and numerical outputs. Validation of the results is then done with the help of bending tests. The bending tests are performed with and without pre-strain in tension prior to the air-bending. Different amplitudes of pre-strain allows to reach rupture or not in bending, thus giving the possibility to find the value of the parameter controlling the non-linear accumulation of the damage. The correlation between experiments and simulations is proved to be successful and gives a very good representation of the mechanical behaviour of the aluminium alloy studied.
History
Journal
Key engineering materialsEvent
Engineering Plasticity and Its Applications. Symposium (13th : 2016 : Higashi-Hiroshima City, Japan)Volume
725Series
Engineering Plasticity and Its Applications SymposiumPagination
495 - 501Publisher
Trans Tech PublicationsLocation
Higashi-Hiroshima City, JapanPlace of publication
Zurich, SwitzerlandStart date
2016-12-04End date
2016-12-08ISSN
1013-9826eISSN
1662-9795Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2017, Trans Tech Publications, SwitzerlandEditor/Contributor(s)
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