Paper Titles
Geometrical Similarity of Thermo-Structural Problems
p.1357
The Production and Performance Estimation of Dunnage for Transportation of a Steel Roll Coil
p.1363
The Effect of Temperature Variations on Cycle Time Using an Optimized Cooling Design and a Temperature Control System
p.1369
Stress Analysis of Cold Die Compaction with Rotating Tools for Aluminum Powder
p.1375
Analysis of Cavity Tool Stresses in Channel Angular Extrusion
p.1381
Nonlinear Analysis of R/C Frame under Static and Cyclic Loadings
p.1387
Failure Mode Analysis for Column over Designed Ductile Frames
p.1393
Quasi-Static and Dynamic Axial Crushing of Various Polygonal Tubes
p.1399
Basic and Optimum Column Over-Design Factor Avoiding Story Mechanism for Frame Structures
p.1405

Analysis of Cavity Tool Stresses in Channel Angular Extrusion

Article Preview

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 channels. 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 along 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.

You might also be interested in these eBooks
Engineering Plasticity and Its Applications View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 340-341)

Pages:

1381-1386

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.340-341.1381

Citation:

Cite this paper

Online since:

June 2007

Authors:

R. Lupoi, F.H. Osman (1)

Keywords:

Energy Absorption, Equal Channel Angular Extrusion (ECAE), Numerical Analysis, Pressure Distribution, Stress Analysis

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] V.M. Segal, Materials processing by simple shear, Materials Science and Engineering A, 197 (1995), 157-164.

Google Scholar

[2] V.M. Segal, K.T. Hartwig, R.E. Goforth, In situ composites processed by simple shear, Materials Science and Engineering A, 224 (1997), 107-115.

DOI: 10.1016/s0921-5093(96)10539-6

Google Scholar

[3] V.M. Segal, Equal channel angular extrusion: from macromechanics to structure formation, Materials Science and Engineering A, 271 (1999), 322-333.

DOI: 10.1016/s0921-5093(99)00248-8

Google Scholar

[4] Zubear Ahmed Khan, Uday Chakkingal, P. Venugopal, Analysis of forming loads, microstructure, development and mechanical property evolution during equal channel angular extrusion of a commercial grade aluminum alloy, Jour. of Mat. Proc. Tech., 135 (2003).

DOI: 10.1016/s0924-0136(02)01019-1

Google Scholar

[5] A. Rosochowski, L. Olejnik, M. Richert, 3D-ECAP of square aluminum billets, proceedings of the 8 th ESAFORM conference, (2005).

DOI: 10.1007/3-540-69845-0_13

Google Scholar

[6] Aidan Shan, In-Ge Moon, Jong-Woo Park, Estimation of friction during equal channel angular (ECA) pressing of aluminum alloy, Jour. of Mat. Proc. Tech., 122 (2002), 255-259.

DOI: 10.1016/s0924-0136(02)00057-2

Google Scholar

[7] Fayek Osman, Reusable Energy Dissipation Device, Patent, W0 2004/044450 A1, (2004).

Google Scholar

[8] R. Hill, The mathematical theory of plasticity, Clarendon Press, (1985).

Google Scholar

[9] C.J. Luis, R. Luri, J. Leon, Strain and temperature analysis of AA-1370 processed by ECAE at different temperatures, Jour. of Mat. Proc. Tech., 164-165 (2005), 1530-1536.

DOI: 10.1016/j.jmatprotec.2005.02.023

Google Scholar