Jopek Hubert, Stręk Tomasz
Institute of Applied Mechanics, Poznan University of Technology, ul. Jana Pawła II 24, 60-965 Poznan, Poland.
Materials (Basel). 2018 Feb 13;11(2):294. doi: 10.3390/ma11020294.
This paper presents a study of new two-dimensional composite structures with respect to their thermomechanical properties. The investigated structures are based on very well-known auxetic geometries-i.e., the anti-tetrachiral and re-entrant honeycomb-modified by additional linking elements, material which is highly sensitive to changes of temperature. The study shows that temperature can be used as a control parameter to tune the value of the effective Poisson's ratio, which allows, in turn, changing its value from positive to negative, according to the temperature applied. The study shows that such thermoauxetic behavior applies both to composites with voids and those completely filled with material.
本文介绍了一种关于新型二维复合结构热机械性能的研究。所研究的结构基于非常著名的负泊松比几何形状，即通过额外的连接元件对反四手征和重入蜂窝进行改性，该材料对温度变化高度敏感。研究表明，温度可作为控制参数来调节有效泊松比的值，进而根据所施加的温度使其值从正变为负。研究表明，这种热致负泊松比行为既适用于有空隙的复合材料，也适用于完全填充材料的复合材料。
