Negative Poisson's ratio and percolating structures

• Autorzy: Wojciechowski K. W. , Novikov V. V.
• Języki publikacji: EN

Abstrakty

EN

Elastic properties of non-uniform, two-component systems are studied in frames of a model of percolation on a simple cubic lattice. It is shown that as the ratio of the bulk moduli of the components tends to zero, kappa =K/sub s//K/sub h/ to 0 (where s,h denote the softer and harder phase, respectively), the Poisson's ratio of the system tends to 0.2 at the percolation threshold of the harder phase, no matter what the values are of the Poisson's ratios of the components. A qualitatively new, collective mechanism leading to negative Poisson's ratio is suggested.

Słowa kluczowe

EN

auxetics; polymers; elastic properties; percolation; percolating structures; Poisson ratio; renormalization group

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2001
• Tom: Vol. 5, No 1
• Strony: 5--11
• Opis fizyczny: Bibliogr. 37 poz., rys.

Twórcy

autor

Wojciechowski K. W.

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17/19, 60-179 Poznan, Poland

autor

Novikov V. V.

Bibliografia

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