elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Simulating the effect of microstructural inhomogeneity in UD carbon-fibre-reinforced thermoplastics on the mechanical behaviour

Löbbecke, Miriam and Schuld, Alexander and Bartsch, Marion (2014) Simulating the effect of microstructural inhomogeneity in UD carbon-fibre-reinforced thermoplastics on the mechanical behaviour. In: NAFEMS Proceedings "Simulation of Composites - A Closed Process Chain?", pp. 314-323. NAFEMS Deutschland, Österreich, Schweiz GmbH. NAFEMS-Seminar: Simulation of Composites - A Closed Process Chain?, 28.-29. Okt. 2014, Leipzig, Deutschland. ISBN 978-1-874376-82-8

Full text not available from this repository.

Abstract

Calculation and modelling of structures made from continuous fibre-reinforced plastics (FRP) is usually based upon Classical Laminate Theory (CLT), in which inhomogeneous composite plies are considered as homogeneous material. For representing the elastic behaviour of FRPs the CLT-method is well suited. However, plastic deformation and damage behaviour particularly found in FRPs with thermoplastic matrix is affected by inhomogeneities. In this work a detailed analysis of the microstructure of a thermoplastic FRP with unidirectional carbon fibre reinforcement was conducted for generating parametric geometry models representative for different observed microstructures. For calculating the geometry models an algorithm has been developed, which allowed for modifying the fibre diameter distribution and the fibre volume fraction. In finite element simulations the effect of fibre arrangement on the mechanical response in terms of elastic, plastic, and damage behaviour has been investigated. The variation of fibre arrangements resulted in different localized plastic deformations and crack paths and also significant differences in the stress-strain curves. The outlined method of analysing and modelling different relevant microstructures of an FRP provides the basis for more realistic calculations of the mechanical behaviour of FRPs in multiscale models.

Item URL in elib:https://elib.dlr.de/91404/
Document Type:Conference or Workshop Item (Speech)
Title:Simulating the effect of microstructural inhomogeneity in UD carbon-fibre-reinforced thermoplastics on the mechanical behaviour
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Löbbecke, MiriamMiriam.Loebbecke (at) dlr.deUNSPECIFIED
Schuld, AlexanderDLR - Inst. WF - Abt. ENMUNSPECIFIED
Bartsch, Marionmarion.bartsch (at) dlr.deUNSPECIFIED
Date:29 October 2014
Journal or Publication Title:NAFEMS Proceedings "Simulation of Composites - A Closed Process Chain?"
Refereed publication:No
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 314-323
Publisher:NAFEMS Deutschland, Österreich, Schweiz GmbH
ISBN:978-1-874376-82-8
Status:Published
Keywords:thermoplastic FRP, simulation, microstructure modelling, FEM
Event Title:NAFEMS-Seminar: Simulation of Composites - A Closed Process Chain?
Event Location:Leipzig, Deutschland
Event Type:national Conference
Event Dates:28.-29. Okt. 2014
Organizer:NAFEMS
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Löbbecke, Miriam
Deposited On:04 Nov 2014 14:38
Last Modified:04 Nov 2014 14:38

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.