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Prediction of damage in cold bulk forming processes
Author(s) -
Zapara Maksim,
Augenstein Eva,
Helm Dirk
Publication year - 2014
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201410492
Subject(s) - finite element method , materials science , damage mechanics , microstructure , process (computing) , forming processes , code (set theory) , fracture (geology) , computer science , structural engineering , metallurgy , engineering , composite material , set (abstract data type) , programming language , operating system
In the present paper a practically relevant extension of the known modelling methods with regard to the description of forming limits of steels typically used in the cold bulk forming is developed and implemented in a commercial finite element code Abaqus. The modeling approach is based on the so‐called micromechanical damage concepts which represent the microstructure evolution more detailed than phenomenological models and, therefore, provide better prediction of damage and failure during the forming process. Particularly, the well‐known damage models of Gurson as well as Gologanu‐Leblond are considered. It is shown that in combination with fracture criteria such models are able to describe failure in bulk forming. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)