Analysis of tool cavity stresses in channel angular extrusion
Citation:
F.Osman and R.Lupoi, Analysis of tool cavity stresses in channel angular extrusion, AEPA 2006, Nagoya (Japan), 2006, 1 - 6Download Item:
Abstract:
The Channel Angular Extrusion (CAE) technique is a process, in which a deformable
solid material is led to yielding through the intersection of inclined c
hannels. Compared to classic
plastic deformation, the process is technically simple but the material experiences, instantly, large
plastic deformation. The deformation occurs locally and high internal stresses develop during the
process. In most cases
the process is used for grain size refinement. Equal Channel Angular
Extrusion (ECAE) is a special case where the intersecting channels are of equal cross sections.
In this paper, an analytical study of the internal stresses and those developed alon
g CAE tools is
presented. A deformation model is introduced for the general process of channel extrusion in
which the intersecting channels are not necessarily equal. The procedure splits the material at the
intersection of the channels into two zones;
one causes the deformation while the other remains
rigid. The analysis is also applied to the particular case of ECAE, and the results are compared
with those obtained from a finite element analysis and the overall experimental pressure.
Author's Homepage:
http://people.tcd.ie/lupoir
Author: LUPOI, ROCCO
Other Titles:
AEPA 2006Type of material:
Conference PaperAvailability:
Full text availableMetadata
Show full item recordLicences: