|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Advanced Biomaterials
||Bioinspired Phase Transforming Cellular Materials
||Pablo Zavattieri, David Restrepo, Yunlan Zhang, Nilesh Mankame
|On-Site Speaker (Planned)
Active materials like shape memory, ferroelectric and magnetostrictive alloys obtain their characteristic properties due to phase transformations. In these materials, phase transformations occur by changing the packing arrangement of the atoms in a process that resembles multistable mechanisms switching between stable configurations. A similar behavior has been observed in folded proteins in which a change in configuration provides the mechanism through which biological materials obtain remarkable properties such as combinations of strength and toughness, superelasticity and shock energy dissipation, among others. We combine concepts learned from biomineralized systems, with auxetic and counter-auxetic mechanisms, to extend the notion of phase transformations to periodic cellular materials by introducing materials whose unit cells have multiple stable configurations. In this work we study 1D and 2D phase transforming cellular materials through numerical/analytical models and experiments to understand the underlying mechanics of the unit cell that allows the material to exhibit phase transformations.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)