|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Biological Materials Science
||Bio-inspired Flexible Armors with 3D Printed Tailored Architectures
||Roberto Martini, Yanis Balit, David VanZyl, Francois Barthelat
|On-Site Speaker (Planned)
Flexible natural armors from fish or alligators have unique and attractive combinations of hardness, flexibility and light weight. In particular, the extreme contrast of stiffness between hard plates and surrounding soft tissues give rise to unusual and attractive mechanisms which now serve as model for the design of bio-inspired armors. Here we examine the unstable tilting of individual scales, a critical failure mode we recently observed on natural and bio-inspired scaled armors and which we captured using contact mechanics. The stability of individual plates is governed by the friction at the surface of the plate, by the size of the plate, by the stiffness of the substrate and by the amount of interactions between neighboring scales. We also used 3D printing to explore how the geometry, overlap and interlocking between neighboring scales can be tuned and optimized to delay unstable tilting of the scales and improve overall performance.
||Planned: Supplemental Proceedings volume