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Bridging cell multiscale modeling of fatigue crack growth in fcc crystals
Author(s) -
Iacobellis Vincent,
Behdinan Kamran
Publication year - 2015
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.4968
Subject(s) - bridging (networking) , materials science , paris' law , structural engineering , composite material , crystal structure , crystal plasticity , crack closure , finite element method , crystallography , multiscale modeling , mechanics , fracture mechanics , microstructure , engineering , chemistry , physics , computational chemistry , computer science , computer network
Summary The previously developed bridging cell method for modeling coupled continuum/atomistic systems at finite temperature is used to model fatigue crack growth in single crystal nickel under two crystal orientations at different temperatures. The method is expanded to implement a temperature‐dependent embedded atom method potential for finite temperature simulations avoiding time‐scale restrictions associated with small timesteps. Results for the fatigue simulation were compared with respect to deformation behavior, stress distribution, and crack length. Results showed very different crack growth mechanisms between the two crystal orientations as well as reduced resistance to crack growth with increased temperature. Copyright © 2015 John Wiley & Sons, Ltd.