- Author
-
Day, A. R.
|
Thorpe, M. F.
|
Snyder, K. A.
|
Garboczi, E. J.
- Title
- Digital-Image-Based Study of Circular Holes in an Elastic Matrix.
- Coporate
- Marquette Univ., Milwaukee, WI
Michigan State Univ., East Lansing
National Institute of Standards and Technology, Gaithersburg, MD
- Book or Conf
- Mechanical Properties of Porous and Cellular Materials. Materials Research Society Symposium Proceedings. Volume 207. November 26-27, 1990,
Materials Research Society, Pittsburgh, PA,
Boston, MA,
Sieradzki, K.; Green, D. J.; Gibson, L. J., Editors,
95-102 p.,
1990
- Keywords
-
digital imaging
|
composite materials
|
computer simulation
|
elastic properties
|
equations
- Abstract
- Using a digital-image-based representation of a continuum composite, we apply computer simulation techniques to obtain the elastic module of a matrix containing randomly-centered circular voids. As the area fraction of the voids increases, the elastic moduli of the composite decreae until they eventually vanish at the percolation threshold. We compare our results with an effective medium theory, which predicts that Poiin ratio tends to a fixed value as the percolation threshold is approached, independent of the values of the elastic moduli in the pure system. Our results are also compared with recent experimental results.