Article (Scientific journals)
From SEM images to elastic responses: a stochastic multiscale analysis of UD fiber reinforced composites
Wu, Ling; Chung, Chi Nghia; Major, Zoltan et al.
2018In Composite Structures, 189C, p. 206-227
Peer Reviewed verified by ORBi
 

Files


Full Text
2018_COST_STOCHUD.pdf
Author postprint (12.07 MB)
Download
Annexes
2017_CMCS_COMP.pdf
Publisher postprint (5.19 MB)
CMCS2017, Paris, France
Download

NOTICE: this is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures 189C, 2018, 206-227, doi:10.1016/j.compstruct.2018.01.051


All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Multiscale; Stochastic; Unidirectional Composites; Stochastic Volume Elements; Micro-structures generator; LIMARC
Abstract :
[en] In this work, the elastic response of unidirectional fiber (UD) reinforced composites is studied in a stochastic multiscale way. First, the micro-structure of UD carbon fiber reinforced composites is statistically studied based on SEM images of its cross-section and an algorithm to generate numerical micro-structures with an equivalent random distribution of fibers is developed. In particular, based on the images spatial analysis, the empirical statistical descriptors are considered as dependent variables and represented using the copula framework, allowing generating micro-structure realizations used as Stochastic Volume Elements (SVEs). Second, a stochastic scale transition is conducted through the homogenization of SVEs. With a view to the use of the resulting meso-scale random field in structural stochastic analyzes, the homogenization is performed in two steps in order to respect the statistical content from the micro-meter-long SVEs to the millimeter-long structural finite elements. To this end, the computational homogenization is applied in a hierarchy model: i) Micro-structure generator produces Small SVEs (SSVEs) which are homogenized; ii) Big SVEs (BSVEs) are constructed from the SSVEs. Finally, it is shown on simple illustrative examples that the scatter of the (homogenized) stress distribution in a composite ply can be simulated by means of the developed methodology.
Research center :
A&M - Aérospatiale et Mécanique - ULiège
Disciplines :
Materials science & engineering
Author, co-author :
Wu, Ling ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Chung, Chi Nghia;  Johannes Kepler University Linz - JKU > Institute of Polymer Product Engineering
Major, Zoltan;  Johannes Kepler University Linz - JKU > Institute of Polymer Product Engineering
Adam, Laurent;  e-Xstream Engineering
Noels, Ludovic  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Language :
English
Title :
From SEM images to elastic responses: a stochastic multiscale analysis of UD fiber reinforced composites
Publication date :
01 April 2018
Journal title :
Composite Structures
ISSN :
0263-8223
eISSN :
1879-1085
Publisher :
Elsevier Science
Volume :
189C
Pages :
206-227
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
FP7 - 291826 - M-ERA.NET - From materials science and engineering to innovation for Europe.
Name of the research project :
The research has been funded by the Walloon Region under the agreement no 1410246 - STOMMMAC (CT-INT2013-03-28) in the context of the M-ERA.NET Joint Call 2014.
Funders :
Service public de Wallonie : Direction générale opérationnelle de l'économie, de l'emploi et de la recherche - DG06
CE - Commission Européenne [BE]
Available on ORBi :
since 18 January 2018

Statistics


Number of views
430 (55 by ULiège)
Number of downloads
634 (14 by ULiège)

Scopus citations®
 
33
Scopus citations®
without self-citations
26
OpenCitations
 
22

Bibliography


Similar publications



Contact ORBi