School of Engineering and Applied Science, Harvard University, Cambridge, MA 02138, USA.
Adv Mater. 2014 Apr 16;26(15):2365-70. doi: 10.1002/adma.201304464. Epub 2013 Dec 23.
Auxetic behavior in low porosity metallic structures is demonstrated via a simple system of orthogonal elliptical voids. In this minimal 2D system, the Poisson's ratio can be effectively controlled by changing the aspect ratio of the voids. In this way, large negative values of Poisson's ratio can be achieved, indicating an effective strategy for designing auxetic structures with desired porosity.
通过正交椭圆孔的简单系统展示了低孔隙率金属结构的弹性行为。在这个最小的 2D 系统中，通过改变孔隙的纵横比可以有效地控制泊松比。通过这种方式，可以实现大的负泊松比，表明了一种具有理想孔隙率的设计弹性结构的有效策略。
