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Fatigue damage model for fibre reinforced polymers at different temperatures considering stress ratio effects

Lüders, Caroline and Krause, Daniel (2018) Fatigue damage model for fibre reinforced polymers at different temperatures considering stress ratio effects. Journal of Composite Materials. Sage Publications. DOI: 10.1177/0021998318773466 ISSN 0021-9983

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Abstract

Most of the existing fatigue models for fibre reinforced polymers are limited to a specific use case. The investigation presented in this paper provides a progressive fatigue damage model that can be used for fatigue analysis of composite structures under general loading conditions and at arbitrary ambient temperatures. The model is based on an existing approach that already considers mean stress and degradation effects. This model is extended for predicting fatigue damage at general loading conditions. To incorporate the effect of ambient temperatures, material and model parameters are defined temperature dependent. The new model is validated using two composite materials and different loading conditions as well as under both room and high temperatures. The model achieves a good prediction quality for the analysed materials, loading conditions and temperatures. This demonstrates that the proposed model is not limited to a specific use case but is able to simulate fatigue of laminated composites under general loading conditions.

Item URL in elib:https://elib.dlr.de/120859/
Document Type:Article
Title:Fatigue damage model for fibre reinforced polymers at different temperatures considering stress ratio effects
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
Date:7 May 2018
Journal or Publication Title:Journal of Composite Materials
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1177/0021998318773466
Publisher:Sage Publications
ISSN:0021-9983
Status:Published
Keywords:Composites, fatigue, progressive damage modeling, mean stress effect, stress ratio effect, temperature, fibre reinforced polymers, carbon fibre, epoxy resin
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC Fahrzeugstruktur (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Wolff, Caroline
Deposited On:01 Aug 2018 14:27
Last Modified:06 Sep 2019 15:19

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