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A coupled phase‐field model for ductile fracture in crystal plasticity
Author(s) -
Hernandez Padilla Carlos Alberto,
Markert Bernd
Publication year - 2014
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201410208
Subject(s) - materials science , fracture (geology) , plasticity , finite element method , superalloy , context (archaeology) , crystal plasticity , phenomenological model , tension (geology) , single crystal , phase (matter) , displacement (psychology) , phase boundary , ductility (earth science) , boundary value problem , mechanics , metallurgy , structural engineering , composite material , geology , microstructure , crystallography , condensed matter physics , engineering , ultimate tensile strength , physics , creep , psychotherapist , chemistry , psychology , paleontology , quantum mechanics
The objective of this work is to present a simplified, nonetheless representative first stage of a phenomenological model to predict the crack evolution of ductile fracture in single crystals. The proposed numerical approach is carried out by merging a conventional well‐ stablished elasto‐plastic crystal plasticity model and a well‐known phase‐field model (PFM) modified to predict ductile fracture. A two‐dymensional initial boundary‐value problem of ductile fracture is introduced considering a single crystal Nickel‐base superalloy material. the model is implemented into the finite element context subjected to a one‐dimensional tension test (displacement‐controlled). (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)