Modelling of equal channel angular pressing using a mesh-free method

Fagan, T, Das, R, Lemiale, V and Estrin, Y 2012, 'Modelling of equal channel angular pressing using a mesh-free method', Journal of Materials Science, vol. 47, no. 11, pp. 4514-4519.


Document type: Journal Article
Collection: Journal Articles

Title Modelling of equal channel angular pressing using a mesh-free method
Author(s) Fagan, T
Das, R
Lemiale, V
Estrin, Y
Year 2012
Journal name Journal of Materials Science
Volume number 47
Issue number 11
Start page 4514
End page 4519
Total pages 6
Publisher Springer
Abstract Severe plastic deformation (SPD) processes are widely recognised as efficient techniques to produce bulk ultrafine-grained materials. As a complement to experiments, computational modelling is extensively used to understand the deformation mechanisms of grain refinement induced by large strain loading conditions. Although considerable research has been undertaken in the modeling of SPD processes, most of the studies have been accomplished using mesh-based methods, such as the finite element method (FEM). Mesh-based methods have inherent difficulties in modelling high-deformation processes because of the distortions in the mesh and the resultant inaccuracies and instabilities. As an alternative, a meshfree method called smoothed particle hydrodynamics (SPH) is used. The effectiveness of this technique is highlighted for modelling of one of the most popular SPD techniques, equal channel angular pressing. A benchmark between SPH and FE calculation is performed. Furthermore, a number of simulations under different processing conditions are compared to existing literature data. A satisfactory agreement is found, which indicates that SPD processes can be approached by mesh-free methods, such as SPH.
Subject Composite and Hybrid Materials
Keyword(s) Computational modelling
Deformation mechanism
FE calculations
Finite element method FEM
Large strains
Literature data
Mesh-based methods
Mesh-free method
Processing condition
Severe plastic deformations
Smoothed particle hydrodynamics
Ultrafine grained materials
DOI - identifier 10.1007/s10853-012-6296-3
Copyright notice © Springer Science+Business Media, LLC 2012
ISSN 0022-2461
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