Analysis of Stress and Strain in the Equal Channel Angular Drawing Process |
| Journal |
Materials Science Forum (Volume 526) |
| Volume |
Advances in Materials Processing Technologies |
| Edited by |
M. Marcos and L. Sevilla |
| Pages |
19-24 |
| DOI |
10.4028/www.scientific.net/MSF.526.19 |
| Online since |
October, 2006 |
| Authors |
Javier León,
C.J. Luis Pérez
|
| Keywords |
ECAD, Finite Element Method (FEM), Manufacturing, Plastic Forming |
| Abstract |
The equal channel angular drawing (ECAD) process is an innovative method to obtain
materials with high plastic strain in a continuous way. This deformation is higher than the
deformation achieved by a conventional wire drawing process, for the same reduction of the cross
section, so if an adequate thermal treatment is employed later, it could be possible to obtain an
initial material with high value that could be useful in conventional manufacturing processes. This
process consists in drawing a material through a die where two circular channels intersect at an
angle between 90º and 135º. In this work a study using finite element of the plastic strain and the
stresses that appear for one aluminium alloy AA-1370 has been carried out. Two ECAD passes have
been made, where for the second pass the billet has been rotated 180º along the longitudinal axis.
Finally, a calibrated pass has been carried out in order to obtain the billet with homogeneous
dimensions in all the cross section. All the simulations have been calculated at room temperature
and by using good conditions of lubrication. In order to perform the FEM simulations, a three
dimensional geometry has been used. To analyze by FEM the second ECAD pass and the
calibration pass, the deformations and stresses achieved in the previous passes have been taken into
consideration. This has been done with the aim of achieving higher accuracy. Moreover, a
comparative analysis with experimental results has been carried out. |
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