Warm Deep Drawing of Aluminium Sheet


Bolt, P.J. and Werkhoven, R.J. and Boogaard, A.H. van den (2003) Warm Deep Drawing of Aluminium Sheet. In: Shemet 2003, 2003.

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Abstract:Aluminium sheet drawing processes can be improved by manipulating local flow behaviour
by means of elevated temperatures and temperature gradients in the tooling. Forming tests
showed that a substantial improvement is possible not only for 5xxx but also for 6xxx series
alloys. Finite element method simulations can be a powerful tool for the design of warm
forming processes and tooling. Their accuracy will depend on the availability of materials
models that are capable of describing the influence of temperature and strain rate on the flow
stresses. Two models, an adapted Nadai power law and a dislocation based Bergström type
model, are compared by means of simulations of a cup drawing process. Experimental
drawing test data are used to validate the modelling approaches, whereas the model parameters
follow from tensile tests.
Item Type:Conference or Workshop Item
Engineering Technology (CTW)
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Link to this item:http://purl.utwente.nl/publications/59417
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