Application of the three dimensional digital material representation approach to model microstructure inhomogeneity during processes involving strain path changes

Krzysztof Muszka , Łukasz Madej

AGH University of Science and Technology, Faculty of Metals Engineering and Industrial,Computer Science, Mickiewicza 30, 30-059 Kraków, Poland.

DOI:

https://doi.org/10.7494/cmms.2013.2.0439

Abstract:

The present paper discusses possibilities of application of the 3D Digital Materials Representation (DMR) approach in the light of the multiscale modelling of materials subjected to the complex strain paths. In some metal forming processes, material undergoes complex loading history that introduces significant inhomogeneity of the strain. High strain gradients, in turn, lead to high inhomogeneity of microstructure and make the prediction of the final material’s properties especially complicated. Proper control of those parameters is very difficult and can be effectively optimised only if the numerical tools are involved. The 3D Digital Materials Representation approach is presented and introduced in the present paper into a multiscale finite element model of two metal forming processes characterised by high microstructural gradients: the cyclic torsion deformation and the Accumulative Angular Drawing (AAD). Due to a combination of the multiscale finite element model with the DMR approach, detailed information on strain inhomogeneities was obtained in both investigated processes.

Cite as:

Muszka, K., & Madej, Ł. (2013). Application of the three dimensional digital material representation approach to model microstructure inhomogeneity during processes involving strain path changes. Computer Methods in Materials Science, 13(2), 258 – 263. https://doi.org/10.7494/cmms.2013.2.0439

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