The origin of high-velocity impact response and damage mechanisms for bioinspired composites

Lee, Sangryun; Lim, Dahyun Daniel; Pegg, Elizabeth; Gu, Grace X.

doi:10.1016/j.xcrp.2022.101152

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…Therefore, the resistance mechanism and morphological damage under different impact velocity need to be clearly explained, and provide guidance for the overall performance evaluation of the structure. For different nacre-like composites, the residual velocity of the bullets and the failure process of the structure were analyzed [37][38][39][40]. From the results, the velocity or kinetic energy reduced by the bullet penetrating the composite usually demonstrated non-linear characteristics.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on the Ballistic Performance of Semi-Cylindrical Nacre-like Composite Shells under High-Velocity Impact

et al. 2023

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The nacre has excellent impact resistance performance, and it is attracting attention in the field of aerospace composite research. Inspired by the layered structure from nacre, semi-cylindrical nacre-like composite shells of brittle silicon carbide ceramic (SiC) and aluminum (AA5083-H116) were established. Two types of tablet arrangements (regular hexagonal and Voronoi polygons) of the composites were designed, and the same size of ceramic and aluminum shell were established for the impact resistance analyzed numerically. In order to better compare the resistance performance of the four types of structures under different impact velocity, the following parameters were analyzed including energy variation, damage characteristic, bullet residual velocity, and semi-cylindrical shell displacement. The results show that the semi-cylindrical ceramic shells have higher rigidity and ballistic limit, but the severe vibration after impact causes penetrating cracks, and the whole structure failure occurred eventually. The nacre-like composites have higher ballistic limits than semi-cylindrical aluminum shells, and the impact of bullets only causes local failure. In the same conditions, the impact resistance of regular hexagons is better than Voronoi polygons. The research analyzes the resistance characteristic of nacre-like composites and single materials, and provides a reference for the design of nacre-like structures.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation on the Ballistic Performance of Semi-Cylindrical Nacre-like Composite Shells under High-Velocity Impact

et al. 2023

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“…Researchers are alternatively exploring the flight mechanisms of natural predators renowned for their stealth, aiming to derive innovative and efficacious design principles. Biological entities, having undergone evolutionary refinement over billions of years, offer a wealth of inspiration for developing humanengineered products and systems [2][3][4][5][6][7] . For instance, creatures like the owl have developed unique wings and feather morphologies that enhance stealth during flight 8 .…”

mentioning

confidence: 99%

Towards silent and efficient flight by combining bioinspired owl feather serrations with cicada wing geometry

Wei,

Wang,

Farris

et al. 2024

Nat Commun

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As natural predators, owls fly with astonishing stealth due to the serrated feather morphology that produces advantageous flow characteristics. Traditionally, these serrations are tailored for airfoil edges with simple two-dimensional patterns, limiting their effect on noise reduction while negotiating tradeoffs in aerodynamic performance. Conversely, the intricately structured wings of cicadas have evolved for effective flapping, presenting a potential blueprint for alleviating these aerodynamic limitations. In this study, we formulate a synergistic design strategy that harmonizes noise suppression with aerodynamic efficiency by integrating the geometrical attributes of owl feathers and cicada forewings, culminating in a three-dimensional sinusoidal serration propeller topology that facilitates both silent and efficient flight. Experimental results show that our design yields a reduction in overall sound pressure levels by up to 5.5 dB and an increase in propulsive efficiency by over 20% compared to the current industry benchmark. Computational fluid dynamics simulations validate the efficacy of the bioinspired design in augmenting surface vorticity and suppressing noise generation across various flow regimes. This topology can advance the multifunctionality of aerodynamic surfaces for the development of quieter and more energy-saving aerial vehicles.

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Extracting Geometry and Topology of Orange Pericarps for the Design of Bioinspired Energy Absorbing Materials

Fox,

Chen,

Antonini

et al. 2024

Advanced Materials

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As a result of evolution, many biological materials have developed irregular structures that lead to outstanding mechanical performances, like high stiffness‐to‐weight ratios and good energy absorption. However, reproducing these irregular biological structures in synthetic materials remains a complex design and fabrication challenge. Here, a bioinspired material design method is presented that characterizes the irregular structure as a network of building blocks, also known as tiles, and rules to connect them. Rather than replicating the biological structure one‐to‐one, synthetic materials are generated with the same distributions of tiles and connectivity rules as the biological material and it is shown that these equivalent materials have structure‐to‐property relationships similar to the biological ones. To demonstrate the method, the pericarp of the orange, a member of the citrus family known for its protective, energy‐absorbing capabilities is studied. Polymer samples are generated and characterized under quasistatic and dynamic compression and display spatially‐varying stiffness and good energy absorption, as seen in the biological materials. By quantifying which tiles and connectivity rules locally deform in response to loading, it is also determined how to spatially control the stiffness and energy absorption.

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The origin of high-velocity impact response and damage mechanisms for bioinspired composites

Cited by 5 publications

References 36 publications

Numerical Investigation on the Ballistic Performance of Semi-Cylindrical Nacre-like Composite Shells under High-Velocity Impact

Numerical Investigation on the Ballistic Performance of Semi-Cylindrical Nacre-like Composite Shells under High-Velocity Impact

Towards silent and efficient flight by combining bioinspired owl feather serrations with cicada wing geometry

Extracting Geometry and Topology of Orange Pericarps for the Design of Bioinspired Energy Absorbing Materials

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