| Description |
The fundamental challenge is physical realization of low-density 3D auxetic metamaterials with unique architecture and programmed deformation behavior. The research on hierarchical auxetics is in its infancy, it predominantly consists in prediction of their performance using sophisticated modeling and preparation of some macroscopic model structures. In spite of their very limited occurrence in natural materials, the several known examples confirm their advantages. In the systems considered, local mechano-mutability by spatially arranging multi-material unit cells should lead to substantial affecting of spatial profile of Poisson’s ratio, moduli of elasticity, toughness, control of acoustic damping, etc. Important tool will be targeted synthesis of auxetic unit cells and related functional nanocomposites based on both natural and synthetic constituents also including 3D printing techniques. |
