کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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798829 | 1466780 | 2007 | 9 صفحه PDF | دانلود رایگان |
Warm Deep Drawing process of circular 0.8 mm thick specimens in AA5754-O was investigated using a home designed experimental equipment and a finite element fully coupled thermo-mechanical model. The research activity was aimed to investigate the formability (evaluated by means of the material Limit Drawing Ratio) of the AA5754-O by means of experimental tests supported by numerical analysis. The following process parameters were taken into account: the temperature level of the blank in the centre of the specimen and the forming speed; in addition standard grease lubricant was used. The LDR when adopting different levels of such process parameters was obtained; in particular tests highlighted optimal values when setting the temperature in the blank centre at 110 °C. The stress and strain state in the material section was calculated; the material yield condition was modelled using the isotropic Von Mises criterion, while the Al flow stress was described by the physically based Bergström model.
Journal: Journal of Materials Processing Technology - Volume 184, Issues 1–3, 12 April 2007, Pages 115–123