Submitted to HEJ
Manuscript no.: MET-990617-A |  
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The profile of the work piece was found to be approximately parabolic both
on the basis of experimental results [2,3,4,5] and
calculations using finite element method [6]. The case of homogeneous
deformations, where the velocity field is such that no bilge occurs, has been
theoretically described in [2,3]. Velocity fields
resulting in bilge work piece have also been developed, see e.g. However these
papers do not take the friction coefficient into account, and are not
suitable for the simulation of material flow as pointed out in [7].
| Submitted to HEJ
Manuscript no.: MET-990617-A |
|
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