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Possibilities to include in numerical simulation stochastic and discontinuous phenomena occurring in material

journal contribution
posted on 2007-01-01, 00:00 authored by L Madej, H Paul, Peter HodgsonPeter Hodgson, M Pietrzyk
Simulation of materials processing has to face new difficulties regarding proper description of various discontinuous and stochastic phenomena occurring in materials. Commonly used rheological models based on differential equations treat material as continuum and are unable to describe properly several important phenomena. That is the reason for ongoing search for alternative models, which can account for non-continuous structure of the materials and for the fact, that various phenomena in the materials occur in different scales from nano to mezo. Accounting for the stochastic character of some phenomena is an additional challenge. One of the solutions may be the coupled Cellular Automata (CA) – Finite Element (FE) multi scale model. A detailed discussion about the advantages given by the developed multi scale CAFE model for strain localization phenomena in contrast to capabilities provided by the conventional FE approaches is a subject of this work. Results obtained from the CAFE model are supported by the experimental observations showing influence of many discontinuities existing in the real material on macroscopic response. An immense capabilities of the CAFE approach in comparison to limitations of the FE method for modeling of real material behavior is are shown this work as well.

History

Journal

Computer methods in materials science

Volume

7

Issue

1

Pagination

162 - 167

Publisher

AKAPIT

Location

Lodz, Poland

ISSN

1641-8581

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2007, AKAPIT

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