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Nonlinear-Elastic Orthotropic Material Modeling of an Epoxy-Based Polymer for Predicting the Material Behavior of Transversely Loaded Fiber-Reinforced Composites

Lüders, Caroline (2020) Nonlinear-Elastic Orthotropic Material Modeling of an Epoxy-Based Polymer for Predicting the Material Behavior of Transversely Loaded Fiber-Reinforced Composites. Journal of Composites Science, 4 (46). Multidisciplinary Digital Publishing Institute (MDPI). DOI: 10.3390/jcs4020046 ISSN 2504-477X

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Official URL: https://www.mdpi.com/2504-477X/4/2/46

Abstract

Micromechanical analyses of transversely loaded fiber-reinforced composites are conducted to gain a better understanding of the damage behavior and to predict the composite behavior from known parameters of the fibers and the matrix. Currently, purely elastic material models for the epoxy-based polymeric matrix do not capture the nonlinearity and the tension/compression-asymmetry of the resins material behavior. In the present contribution, a purely elastic material model is presented that captures these effects. To this end, a nonlinear-elastic orthotropic material modeling is proposed. Using this matrix material model, finite element-based simulations are performed to predict the composite behavior under transverse tension, transverse compression and shear. Therefore, the composites cross-section is modeled by a representative volume element. To evaluate the matrix modeling approach, the simulation results are compared to experimental data and the prediction error is computed. Furthermore, the accuracy of the prediction is compared to that of selected literature models. Compared to both experimental and literature data, the proposed modeling approach gives a good prediction of the composite behavior under matrix-dominated load cases.

Item URL in elib:https://elib.dlr.de/134784/
Document Type:Article
Title:Nonlinear-Elastic Orthotropic Material Modeling of an Epoxy-Based Polymer for Predicting the Material Behavior of Transversely Loaded Fiber-Reinforced Composites
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lüders, Carolinecaroline.lueders (at) dlr.dehttps://orcid.org/0000-0002-9661-7819
Date:2 May 2020
Journal or Publication Title:Journal of Composites Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:No
In ISI Web of Science:Yes
Volume:4
DOI :10.3390/jcs4020046
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Series Name:Advanced Fiber Reinforced Polymer Composites
ISSN:2504-477X
Status:Published
Keywords:fiber-reinforced plastics; micromechanics; material modeling; polymeric matrix; elasticity
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
Deposited By: Wolff, Caroline
Deposited On:11 May 2020 07:52
Last Modified:21 Aug 2020 04:22

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