Study of Non-Monotonity of Forming Processes Using Finite Element Analysis

Kristóf Bobor; György Krallics

doi:10.4028/www.scientific.net/MSF.659.373

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HomeMaterials Science ForumMaterials Science Forum Vol. 659Study of Non-Monotonity of Forming Processes Using...

Study of Non-Monotonity of Forming Processes Using Finite Element Analysis

Abstract:

The method of severe plastic deformation is often used to produce bulk ultra-fine grained materials. Numerous methods exist, which are able to produce ultra fine grained materials. Investigated the mechanical schema of these procedures, we searched for such attributes, which characterize the mentioned techniques. By our previous researches can be established, that for these techniques shear deformation as well as the so-called non-monotonic deformation are characteristic. In this paper a degree of non-monotonity is presented, which is an appropriate measure to characterize the forming processes. Besides this the combined Euler – Lagrange method is showed, which is appropriate to obtain a continuous velocity field from finite element analysis. Eventually the mechanical analysis of the extrusion, conventional and asymmetric rolling is showed with respect to the non-monotonity.

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Periodical:

Materials Science Forum (Volume 659)

Pages:

373-378

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.659.373

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Online since:

September 2010

Authors:

Kristóf Bobor, György Krallics

Keywords:

Asymmetric Rolling, Degree of Non-Monotonity, Nanostructured Materials, Severe Plastic Deformation (SPD), Symmetric Rolling

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