Blog Archives

The f.c.c. Crystals of Hard Spheres with an Array of [001]-Nanochannel Inclusions Filled by the Simplest Hard Sphere Molecules

Narojczyk Jakub W.

In this work the systems composed of particles interacting with hard potential are investigated. These systems feature certain modifications to the crystal structure – selected particles are replaced with ones that differ slightly in their diameters. Such modifications, which can be thought of ...

Rise of the Poisson’s Ratio in f.c.c. Hard Sphere Crystals with the Narrowest Orthogonal Nanochannels Filled by Hard Spheres of Another Diameter

Narojczyk Jakub W., Tretiakov Konstantin V., Wojciechowski Krzysztof W.

Auxetic materials, i.e. materials exhibiting negative Poisson’s ratio, stand to answer the demand for novel materials with unique and application-tailored properties. The vast range of potential applications motivates researchers to search for new materials with such properties, or to look for ...

Poisson’s Ratio of Yukawa Systems with Nanoinclusions: Nanochannel vs. Nanolayer

Tretiakov Konstantin V., Wojciechowski Krzysztof W., Narojczyk Jakub W., Pigłowski Paweł M.

The influence of periodically distributed inclusions on elastic properties of crystals in which particles interact through Yukawa potential is discussed briefly. The inclusions in the form of channels oriented along the [001]-direction and layers orthogonal to the [010]-direction are considered. ...

On Effective Young’s Modulus and Poisson’s Ratio of the Auxetic Thermoelastic Material

Maruszewski Bogdan, Drzewiecki Andrzej, Starosta Roman

The paper deals with an influence of the excitation frequency and the dimensions of a free supported thermoelastic plate on the effective Poisson’s ratio and the effective Young’s modulus. Both of these parameters are not, in such a situation, the elastic material constants. The considered t ...

AN APPROXIMATION METHOD FOR SIMULATING TEMPERATURE DEPENDENCE OF POISSON’S RATIOS OF SELF-EXPANDING AUXEGENS

Wu Hongmei, Wei Gaoyuan

A combined molecular dynamics and molecular mechanics method has been developed for estimating Poisson’s ratios of certain types of molecular auxetics at various temperatures. The temperature dependence of the auxeticity of a special class of molecular auxetics, namely, a self-expanding sup ...

Poisson’s ratio of anisotropic systems

Wojciechowski Krzysztof W.

The Poisson’s ratio of anisotropic materials depends, in general, both on a “longitudinal” direction along which the stress is changed and on a “transverse” direction in which the transverse deformation is measured. For cubic media there exist “longitudinal” directions, parallel to ...