Application of Adaptive Mesh and ALE Method in Simulation of Extrusion of Aluminum Alloys |
| Journal |
Key Engineering Materials (Volume 367) |
| Volume |
Advances on Extrusion Technology and Simulation of Light Alloys |
| Edited by |
Luca Tomesani and Lorenzo Donati |
| Pages |
117-123 |
| DOI |
10.4028/www.scientific.net/KEM.367.117 |
| Online since |
February, 2008 |
| Authors |
T. Kayser,
Farhad Parvizian,
C. Hortig,
Bob Svendsen
|
| Keywords |
Adaptive Mesh, Aluminum, Extrusion, Microstructure, Simulation |
| Abstract |
The purpose of this work is the modeling and simulation of the material behavior of aluminum
alloys during extrusion processes. In particular, attention is focused here on aluminum alloys
of the 6000 series (Al-Mg-Si) and 7000 series (Al-Zn-Mg). The material behavior of these alloys
during extrusion is governed mainly by dynamic recovery and static recrystallization during cooling.
The current material model is based on the role of energy stored in the material during deformation,
as it acts as the driving force for microstructural development. The concept of internal variables is
used to describe state quantities such as dislocation density, average grain size and average grain
orientation. The focus of the current paper is on some of the numerical aspects of the extrusion
process simulation such as contact problems and adaptive mesh refinement which should be considered
in order to obtain more accurate and robust results. |
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