Modelling of aluminium sheet material at elevated temperatures


Haaren, L. and Boogaard, A.H. van den and Huetink, J. (2004) Modelling of aluminium sheet material at elevated temperatures. In: Seventh ESAFORM Conference on Material Forming, 28-30 april 2004, Trondheim, Norway.

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Abstract:The formability of Al–Mg sheet can be improved considerably, by increasing the temperature.
At elevated temperatures, the mechanical response of the material becomes strain rate dependent. To accurately
simulate warm forming of aluminium sheet, a material model is required that incorporates the temperature
and strain-rate dependency. In this paper hardening is described succesfully with a physically based material
model for temperatures up to 200 ◦C. At higher temperatures and very low strain rates, the flow curve deviates
significantly from the model. Strain rate jumps still pose a serious problem to the models
Item Type:Conference or Workshop Item
Engineering Technology (CTW)
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