Reference : Generation of open foam RVEs with sharp edges using Distance fields and Level sets
Scientific congresses and symposiums : Unpublished conference/Abstract
Engineering, computing & technology : Mechanical engineering
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/216714
Generation of open foam RVEs with sharp edges using Distance fields and Level sets
English
[en] Computational Modeling and Analysis of Complex Cellular Material RVEs
Kilingar, Nanda Gopala mailto [Université de Liège - ULiege > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3) >]
Noels, Ludovic mailto [Université de Liège - ULiege > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3) >]
Massart, Thierry Jacques mailto [Université Libre de Bruxelles - ULB > Building, Architecture & Town Planning Dept. > Structural and Material Computational mechanics > >]
Ehab Moustafa Kamel, Karim mailto [Université Libre de Bruxelles - ULB > Building, Architecture & Town Planning Dept. > Structural and Material Computational mechanics > >]
Sonon, Bernard mailto [Université Libre de Bruxelles - ULB > Building, Architecture & Town Planning Dept. > Structural and Material Computational mechanics > >]
7-Nov-2017
REFERENCES
[1] B. Sonon, B. Fran¸ cois, T.J. Massart, An advanced approach for the generation of
complex cellular material Representative Volume Elements using distance fields and
level sets. Computational Mechanics (2015) 56:221 doi:10.1007/s00466-015-1168-8.
[2] P-O. Persson, G. Strang, A simple mesh generator in MATLAB. SIAM review (2004)
46(2):329-345.
[3] K. Ehab Moustafa Kamel, B. Sonon, T.J. Massart, An integrated approach for the
generation and conformal discretization of complex inclusion-based microstructures,
Under preparation
No
ECCOMAS Thematic Conference on Computational modeling of Complex Materials across the Scales - CMCS 2017
7-9 November 2017
Université Paris-Est Marne-la-Vallée (MSME Laboratory), Eindhoven University of Technology and University of Erlangen-Nuremberg
Paris
France
[en] Cellular Materials ; Open-cell foams ; Multi-scale analysis ; Representative Volume Elements
[en] A methodology to generate Representative Volume Elements for open foam
cellular materials based on distance and level set functions is explained. The main focus
of this work is to properly represent the geometry of the sharp edges of the foam struts
that are resulting from the solidification phase during manufacturing. An approach to generate RVEs for open-cell foams is described in [1], where arbitrary shaped tessellations are produced and specific combination of distance functions are used to generate open foam RVEs. Steep discontinuities in the distance functions derivatives result in the generation of jagged sharp edges, due to the use of discrete level set functions. The procedure to extract geometries from multiple level set functions to reproduce such sharp edges of the struts proposed in [1] has been incorporated in the current work.
The individual cells are extracted as inclusion surfaces based on distance functions. The
inclusion surfaces are then modified using multiple level set functions, and the sharp
edges are computed from the intersection of these inclusions. The resulting geometry
can then be meshed using size functions based on curvature and narrowness and a mesh
optimization inspired from [2]. The methodology to produce high quality meshes based on
[3] will be outlined (Figure 2). The resulting FE models will be then used in simulations
to assess the practical applications of these models by comparing with experimental data
of physical samples.
Aérospatiale et Mécanique - A&M
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Upscaling of open foam behavior with variability
Researchers
http://hdl.handle.net/2268/216714

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