Abstract
Blade forging has been studied and solved by two elastic-plastic finite element codes, NIKE2D and DYNA2D, as a two-dimensional plane-strain problem. The main difference between the two codes is that the first one is implicit while the second is dynamic explicit. The efficiency of implicit and explicit solutions regarding blade forging has been studied. The initial position of the circular preform was optimized so that the corner spaces of the dies become filled and the pressure on the dies become as small as possible thus satisfying the design condition of flashless forging. The grading of the finite element mesh for the perform has been studied and been found to be of great importance.
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