Abstract
In order to provide guidance to future forming of deep and large parts, 3D numerical simulation was used to study large sheet deformation process. We designed two different die structures to analyze forming process, during which the coil discharged successively at different positions. The value of material flowing, the effect of subsequent deformation on deformed sheet region, strain distribution and forming quality are all analyzed and discussed. We found flat-bottom die, two times discharging in one position, discharging voltage and coil rotation angle are key factors, which effect final forming quality directly.
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