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Title: Single overloads FCG modeling considering damage accumulation
Authors: Sérgio, E. R. 
Borges, M. F. M. 
Neto, D. M. 
Antunes, F. V. 
Pais, J. P. 
Issue Date: 2021
Project: PTDC/EME-EME/31657/2017 
MATIS (CENTRO-01-0145-FEDER-000014) 
Serial title, monograph or event: Procedia Structural Integrity
Volume: 33
Abstract: In this study, Fatigue Crack Growth (FCG) in a CT specimen, submitted to single overloads, is predicted by a node release numerical model, which considers the plastic strain to be the main FCG driving force. The Gauss-Tvergaard-Needleman (GTN) damage model was implemented to account for the, inevitable, growth and nucleation of microvoids in the occurrence of high levels of plastic strain. Crack closure shown to be a crucial mechanism influencing the differences between both models, as well as it explains the effects of the overloads on the FCG rate.
ISSN: 24523216
DOI: 10.1016/j.prostr.2021.10.113
Rights: openAccess
Appears in Collections:I&D CEMMPRE - Artigos em Revistas Internacionais

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