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Gradient damage modeling of brittle fracture in an explicit dynamics context
Author(s) -
Li Tianyi,
Marigo JeanJacques,
Guilbaud Daniel,
Potapov Serguei
Publication year - 2016
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.5262
Subject(s) - context (archaeology) , brittle fracture , dynamics (music) , fracture (geology) , brittleness , mechanics , materials science , geology , physics , geotechnical engineering , composite material , paleontology , acoustics
Summary In this contribution, we propose a dynamic gradient damage model as a phase‐field approach for studying brutal fracture phenomena in quasi‐brittle materials under impact‐type loading conditions. Several existing approaches to account for the tension–compression asymmetry of fracture behavior of materials are reviewed. A better understanding of these models is provided through a uniaxial traction experiment. We then give an efficient numerical implementation of the model in an explicit dynamics context. Simulations results obtained with parallel computing are discussed both from a computational and physical point of view. Different damage constitutive laws and tension–compression asymmetry formulations are compared with respect to their aptitude to approximate brittle fracture. Copyright © 2016 John Wiley & Sons, Ltd.