Robustness of finite element simulations in densely packed random particle composites

Daniel Peterseim; Daniel Peterseim

doi:10.3934/nhm.2012.7.113

Networks and Heterogeneous Media

2012, Volume 7, Issue 1: 113-126. doi: 10.3934/nhm.2012.7.113

Previous Article Next Article

Robustness of finite element simulations in densely packed random particle composites

Daniel Peterseim ^{1
,}

1.
Humboldt-Universität zu Berlin, Institut für Mathematik, Unter den Linden 6, 10099 Berlin

Received: 01 July 2011 Revised: 01 October 2011
Primary: 35B65, 65N15; Secondary: 65N30, 74Q20.

This paper presents some weighted $H^2$-regularity estimates for a model Poisson problem with discontinuous coefficient at high contrast. The coefficient represents a random particle reinforced composite material, i.e., perfectly conducting circular particles are randomly distributed in some background material with low conductivity. Based on these regularity results we study the percolation of thermal conductivity of the material as the volume fraction of the particles is close to the jammed state. We prove that the characteristic percolation behavior of the material is well captured by standard conforming finite element models.
- Perforated domain,
- thickness of a domain,
- finite element method,
- high contrast,
- percolation,
- phase transition
Citation: Daniel Peterseim. Robustness of finite element simulations in densely packed random particle composites[J]. Networks and Heterogeneous Media, 2012, 7(1): 113-126. doi: 10.3934/nhm.2012.7.113

Related Papers:

Abstract

This paper presents some weighted $H^2$-regularity estimates for a model Poisson problem with discontinuous coefficient at high contrast. The coefficient represents a random particle reinforced composite material, i.e., perfectly conducting circular particles are randomly distributed in some background material with low conductivity. Based on these regularity results we study the percolation of thermal conductivity of the material as the volume fraction of the particles is close to the jammed state. We prove that the characteristic percolation behavior of the material is well captured by standard conforming finite element models.

References

[1]	I. Babuška and B. Q. Guo, Regularity of the solution of elliptic problems with piecewise analytic data. II: The trace spaces and application to the boundary value problems with nonhomogeneous boundary conditions, SIAM J. Math. Anal., 20 (1989), 763-781. doi: 10.1137/0520054
[2]	L. Berlyand and A. Kolpakov, Network approximation in the limit of small interparticle distance of the effective properties of a high-contrast random dispersed composite, Arch. Ration. Mech. Anal., 159 (2001), 179-227. doi: 10.1007/s002050100142
[3]	L. Berlyand and A. Novikov, Error of the network approximation for densely packed composites with irregular geometry, SIAM J. Math. Anal., 34 (2002), 385-408. doi: 10.1137/S0036141001397144
[4]	L. Borcea and G. C. Papanicolaou, Network approximation for transport properties of high contrast materials, SIAM J. Appl. Math., 58 (1998), 501-539. doi: 10.1137/S0036139996301891
[5]	G. A. Chechkin, Yu. O. Koroleva and L.-E. Persson, On the precise asymptotics of the constant in Friedrich's inequality for functions vanishing on the part of the boundary with microinhomogeneous structure, J. Inequal. Appl., 2007, Art. ID 34138, 13 pp.
[6]	L. C. Evans, "Partial Differential Equations,'' 2^nd edition, Graduate Studies in Mathematics, 19, American Mathematical Society, Providence, RI, 2010.
[7]	J. M. Melenk, "$hp$-Finite Element Methods for Singular Perturbations,'' Lecture Notes in Mathematics, 1796, Springer-Verlag, Berlin, 2002.
[8]	D. Peterseim, Generalized delaunay partitions and composite material modeling, preprint, DFG Research Center Matheon Berlin, 690 (2010).
[9]	D. Peterseim, Triangulating a system of disks, in "Proc. 26^th European Workshop on Computational Geometry,'' (2010), 241-244.
[10]	D. Peterseim and C. Carstensen, Finite element network approximation of conductivity in particle composites, preprint, DFG Research Center Matheon Berlin, 807 (2010).

Reader Comments

Your name:*

Email:*
© 2012 the Author(s), licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0)