TY - JOUR

T1 - The elastic moduli of a sheet containing circular holes

AU - Day, A. R.

AU - Snyder, K. A.

AU - Garboczi, E. J.

AU - Thorpe, M. F.

N1 - Funding Information:
We would like to thank P. D~;XIWRY and I. J~srrik lbr useful &cussions and .f. C’III:N li)~ technical help. Two of us (AR11 and MFT) would like to thank NIST Tar its hospitalily during extcndcd visits. One of us (MFT) acknowlcdgcs partial support from the State of Michigan Research Excellcncc Fund and from NATO.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.

PY - 1992/7

Y1 - 1992/7

N2 - We apply computer simulation techniques to obtain the clastic moduli of a matrix containing circular holes. As the area fraction of holes increases, the Young's modulus of the composite decreases from E0 until it eventually vanishes at the percolation threshold. We study three distinct geometries: (a) periodically centered circular holes on a honeycomb lattice, (b) periodically centered circular holes on a triangular lattice, and (c) randomly centered circular holes. All three cases have the same dilute limit that can be calculated exactly. By examining the narrow necks between adjacent circles, we have calculated the critical behavior for the regular cases and obtain critical exponents of 1 2 or 3 2, depending on the local breakdown mode at the necks. For (c) we compare our results with an effective-medium theory, which predicts that the Poisson's ratio tends to 1 3 as the percolation threshold is approached, independent of its value in the pure system. Our results are also compared with recent experimental results. Based on this work, we propose that the relative Young's modulus E E0 of a two-dimensional sheet containing circular holes, overlapping or not, is the same for ail materials, independent of the Poisson's ratio v0, for any prescribed geometry.

AB - We apply computer simulation techniques to obtain the clastic moduli of a matrix containing circular holes. As the area fraction of holes increases, the Young's modulus of the composite decreases from E0 until it eventually vanishes at the percolation threshold. We study three distinct geometries: (a) periodically centered circular holes on a honeycomb lattice, (b) periodically centered circular holes on a triangular lattice, and (c) randomly centered circular holes. All three cases have the same dilute limit that can be calculated exactly. By examining the narrow necks between adjacent circles, we have calculated the critical behavior for the regular cases and obtain critical exponents of 1 2 or 3 2, depending on the local breakdown mode at the necks. For (c) we compare our results with an effective-medium theory, which predicts that the Poisson's ratio tends to 1 3 as the percolation threshold is approached, independent of its value in the pure system. Our results are also compared with recent experimental results. Based on this work, we propose that the relative Young's modulus E E0 of a two-dimensional sheet containing circular holes, overlapping or not, is the same for ail materials, independent of the Poisson's ratio v0, for any prescribed geometry.

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U2 - 10.1016/0022-5096(92)90061-6

DO - 10.1016/0022-5096(92)90061-6

M3 - Article

AN - SCOPUS:0000182139

SN - 0022-5096

VL - 40

SP - 1031

EP - 1051

JO - Journal of the Mechanics and Physics of Solids

JF - Journal of the Mechanics and Physics of Solids

IS - 5

ER -