Article (Scientific journals)
Computational generation of open-foam representative volume elements with morphological control using distance fields
Kilingar, Nanda Gopala; Ehab Moustafa Kamel, Karim; Sonon, Bernard et al.
2019In European Journal of Mechanics. A, Solids, 78, p. 103847
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NOTICE: this is the author’s version of a work that was accepted for publication in European Journal of Mechanics / A Solids. 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 European Journal of Mechanics / A Solids 78, 2019, 103847, doi: 10.1016/j.euromechsol.2019.103847


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Keywords :
Open-cell foam; Representational Volume Elements; Distance Fields
Abstract :
[en] This paper presents an automated approach to build computationally Representative Volume Elements (RVE) of open-foam cellular materials, enabling the study of the effects of the microstructural features on their macroscopic behavior. The approach strongly relies on the use of distance and level set functions. The methodology is based on the extraction of random tessellations from inclusion packings following predetermined statistical packing distribution criteria. With the help of simple recombination operations on the distance fields, the tessellations are made to degenerate in Laguerre tessellations. Predetermined morphological characteristics like strut cross-section variation based on commercially available materials are applied on the RVE to ensure the extraction of closely matching models using simple surface extraction tools, and a detailed morphology quantification of the resulting RVEs is provided by comparing them with experimental observations. The extracted RVE surface is then treated with smoothening criteria before obtaining a 3D tetrahedralized model. This model can then be exported for multi-scale simulations to assess the effects of microstructural features by an upscaling methodology. The approach is illustrated by the simulation of a compression test on an RVE incorporating plasticity with geometrically non-linear behavior.
Research center :
A&M - Aérospatiale et Mécanique - ULiège
Disciplines :
Mechanical engineering
Author, co-author :
Kilingar, Nanda Gopala ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Ehab Moustafa Kamel, Karim;  Université Libre de Bruxelles - ULB > Building, Architecture & Town Planning Dept. > Structural and Material Computational mechanics
Sonon, Bernard;  Université Libre de Bruxelles - ULB > Building, Architecture & Town Planning Dept. > Structural and Material Computational mechanics
Massart, Thierry Jacques;  Université Libre de Bruxelles - ULB > Building, Architecture & Town Planning Department (BATir) > Structural and Material Computational mechanics
Noels, Ludovic  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Language :
English
Title :
Computational generation of open-foam representative volume elements with morphological control using distance fields
Publication date :
November 2019
Journal title :
European Journal of Mechanics. A, Solids
ISSN :
0997-7538
Publisher :
Elsevier, Netherlands
Volume :
78
Pages :
103847
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Enlightenit, project number PDR T.0038.16 of FRS-FNRS
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 29 August 2019

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