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Effect of crystallographic orientation in modelling of anisotropic plasticity with an analytical yield function
Author(s) -
Neuhaus Selina,
Srivastava Kinshuk,
Scholl Sebastian,
Diebels Stefan
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900349
Subject(s) - materials science , anisotropy , plasticity , yield (engineering) , microstructure , texture (cosmology) , structural material , deformation (meteorology) , work (physics) , phase (matter) , metallurgy , composite material , condensed matter physics , thermodynamics , optics , physics , image (mathematics) , quantum mechanics , artificial intelligence , computer science
Abstract The mechanical properties of thermomechanical rolled low alloyed (TM) steels highly depend on their microstructure, which is formed during the production processes of the metal plate. Additionally, an elastic‐plastic anisotropy is encountered in these materials due to the texture of the ferritic grains. Hence, the material exhibits different stress‐strain curves in rolling direction ( RD ), normal direction ( ND ) and transverse direction ( TD ). The aim of the present work is to include plastic anisotropy of the body‐centered cubic, ferritic phase in an already existing microstructure‐based model for the elasto‐plastic deformation of TM steels and thereby, to widen the scope of such a model to a broader range of materials. The following contribution discusses the results of simulations on single crystals and bicrystals by using an analytical yield function in order to accomplish a deeper understanding of the behaviour and applicability of an analytical, anisotropic yield function on grain level to describe anisotropically deforming metals.