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Adaptive cycle jump and limits of degradation in micromechanical fatigue simulations of fibre-reinforced plastics

Lüders, Caroline and Krause, Daniel and Sinapius, Michael (2019) Adaptive cycle jump and limits of degradation in micromechanical fatigue simulations of fibre-reinforced plastics. International Journal of Damage Mechanics, 28 (10), pp. 1523-1555. Sage Publications. DOI: 10.1177/1056789519833728 ISSN 1056-7895

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Official URL: https://journals.sagepub.com/eprint/WCMVUGdA4xyNqJbFuh6W/full

Abstract

This research investigates the influence of numerical parameters of micromechanical fatigue damage models on the obtained progressive damage behaviour of fibre-reinforced plastics at transverse tensile fatigue loads. The simulated damage behaviour is evaluated using experimentally observed crack patters published in the literature. The investigated numerical model parameters are (1) whether or not the model considers static failure within a simulated load cycle, (2) the degree of material property degradation after sudden failure and (3) the size of the cycle jump. The results reveal a significant influence of the degree of material degradation and of the cycle jump on the simulated matrix crack formation at both higher and lower fatigue loads. Static failure within a simulated load cycle primarily affects the damage behaviour at higher fatigue loads. The paper gives recommendations of the parameter choice for plausible progressive fatigue damage simulation results. Regarding the cycle jump, an adaptive algorithm is proposed and implemented. This approach leads to plausible fatigue damage results paired with a significant reduction of computation time comparing to a cycle-by-cycle analysis.

Item URL in elib:https://elib.dlr.de/131198/
Document Type:Article
Title:Adaptive cycle jump and limits of degradation in micromechanical fatigue simulations of fibre-reinforced plastics
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lüders, Carolinecaroline.lueders (at) dlr.dehttps://orcid.org/0000-0002-9661-7819
Krause, DanielDaniel.Krause (at) dlr.dehttps://orcid.org/0000-0001-5315-241X
Sinapius, MichaelMichael.Sinapius (at) dlr.deUNSPECIFIED
Date:2019
Journal or Publication Title:International Journal of Damage Mechanics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:28
DOI :10.1177/1056789519833728
Page Range:pp. 1523-1555
Publisher:Sage Publications
ISSN:1056-7895
Status:Published
Keywords:Fatigue, FRP, micromechanics, progressive damage degradation, cycle jump
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Rail Transport
DLR - Research area:Transport
DLR - Program:V SC Schienenverkehr
DLR - Research theme (Project):V - NGT BIT
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Wolff, Caroline
Deposited On:09 Dec 2019 09:52
Last Modified:09 Dec 2019 09:52

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