Shear Wave Filtering in Naturally-Occurring Bouligand Structures
Abstract
Wave propagation was investigated in the Bouligand-like structure from within the dactyl club of the Stomatopod, a crustacean that is known to smash their heavily shelled preys with high accelerations. We incorporate the layered nature in a unitary material cell through the propagator matrix formalism while the periodic nature of the material is considered via Bloch boundary conditions as applied in the theory of solid state physics. Our results show that these materials exhibit bandgaps at frequencies related to the stress pulse generated by the impact of the dactyl club to its prey, and therefore exhibiting wave filtering in addition to the already known mechanisms of macroscopic isotropic behavior and toughness.
Cite
@article{arxiv.1505.04203,
title = {Shear Wave Filtering in Naturally-Occurring Bouligand Structures},
author = {Nicolás Guarín-Zapata and Juan Gomez and Nick Yaraghi and David Kisailus and Pablo D. Zavattieri},
journal= {arXiv preprint arXiv:1505.04203},
year = {2015}
}
Comments
19 pages, 7 figures, In press, Acta Biomaterialia (2015)