<p>
There is a current interest in exploring novel microstructural
architectures that take advantage of the response of independent
phases. Current guidelines in materials design are not just based on
changing the properties of the different phases but also on modifying
its base architecture. Hence, the mechanical behavior of composite
materials can be adjusted by designing microstructures that alternate
stiff and flexible constituents, combined with well-designed
architectures. One source of inspiration to achieve these designs is
Nature, where biologically mineralized composites can be taken as an
example for the design of next-generation structural materials due to
their low density, high-strength, and toughness currently unmatched
by engineering technologies.</p><p><br></p>
<p>The present work focuses on the modeling of
biologically inspired composites, where the source of inspiration is
the dactyl club of the Stomatopod. Particularly, we built
computational models for different regions of the dactyl club,
namely: periodic and impact regions. Thus, this research aimed to
analyze the effect of microstructure present in the impact and
periodic regions in the impact resistance associated with the
materials present in the appendage of stomatopods. The main
contributions of this work are twofold. First, we built a model that
helped to study wave propagation in the periodic region. This helped
to identify possible bandgaps and their influence on the wave
propagation through the material. Later on, we extended what we
learned from this material to study the bandgap tuning in bioinspired
composites. Second, we helped to unveil new microstructural features
in the impact region of the dactyl club. Specifically, the
sinusoidally helicoidal composite and bicontinuous particulate layer.
For these, structural features we developed finite element models to
understand their mechanical behavior.</p><p><br></p>
<p>The results in this work help to elucidate some
new microstructures and present some guidelines in the design of
architectured materials. By combining the current synthesis and
advanced manufacturing methods with design elements from these
biological structures we can realize potential blueprints for a new
generation of advanced materials with a broad range of applications.
Some of the possible applications include impact- and
vibration-resistant coatings for buildings, body armors, aircraft,
and automobiles, as well as in abrasion- and impact-resistant wind
turbines.</p><br>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/14498088 |
| Date | 06 May 2021 |
| Creators | Nicolas Guarin-Zapata (6532391) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY-ND 4.0 |
| Relation | https://figshare.com/articles/thesis/Modeling_and_Analysis_of_Wave_and_Damaging_Phenomena_in_Biological_and_Bioinspired_Materials/14498088 |
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