physica status solidi (b)
© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Editor: Stefan Hildebrandt (Editor-in-Chief), Sabine Bahrs (Deputy Editor)
Online ISSN: 1521-3951
Searching for auxetics with DYNA3D and ParaDyn
The present special issue of physica status solidi (b), guest-edited by Krzysztof W. Wojciechowski, Andrew Alderson, Arkadiusz Branka, and Kim L. Alderson, is dedicated to Auxetics and Related Systems – materials which exhibit negative Poisson's ratio behaviour. Most papers were presented at a workshop which was held in Poznan–Będlewo, 27–30 June 2004.
In our Editor's Choice  novel simulations with a parallel finite element program, ParaDyn, have been conducted to study the formation of auxetic materials. Structures composed of either brick elements (hexahedra) or shell elements are constructed in a regular array of panels. These structures are compressed and relaxed to form an initial state for an auxetic (foam-like) material. The foam structure shown is composed of 208896 shell elements arranged in four by four panels. Applying a uniaxial compression to this structure characterizes the material behaviour of the lateral surfaces as normal (expanding) or auxetic (compressing).
The first author, William G. Hoover, has been working in areas such as statistical and applied mechanics, nonlinear and molecular dynamics and is now pursuing, as he states on his own webpage, an “active retired research career” as Professor Emeritus of UC Davis.