The mystery of coconut overturns the crashworthiness design of composite materials

Lu, Chuanhao; Hou, Shujuan; Zhang, Zheyi; Chen, Junning; Li, Qing; Han, Xu

doi:10.1016/j.ijmecsci.2019.105244

Cited by 35 publications

(15 citation statements)

References 53 publications

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“…The results showed promise with the developed bio-inspired structure and may present a new perspective on providing superior mechanical properties of natural cellular materials and offer insights for applications of bio-inspired materials (See Figure 3). Lu et al (2019) revealed in their study the structure present in coconut fibers for shock resistance and energy absorption. Then a bio-inspired model was developed and validated by the numerical calculations for providing a functional compound.…”

Section: Pomelo -Citrus Maximamentioning

confidence: 99%

Biomimetics as a strategy for the development of bioinspired structures for energy absorption based on fruits

Oliveira¹

2021

Cuadernos

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Esta revisión busca actualizar nuestro conocimiento sobre frutas, sus estructuras, sus materiales para el desarrollo de productos bioinspirados y sus respectivas aplicaciones relacionadas con la absorción de energía y la disipación de impactos. En la naturaleza, encontraremos multitud de estructuras biológicas que cumplen la función de protección y resistencia a los choques. Este estudio se centra en una de las funciones biológicamente más importantes que se encuentran en el embalaje natural, que consiste en la protección directa o indirecta contra daños mecánicos u otras influencias ambientales negativas que involucran la resistencia a los choques, así como la absorción de energía. A través de la revisión sistemática de la literatura, que incluye toda la investigación revisada por pares, se seleccionaron 21 estudios de investigación documentos que son relevantes para el objetivo de asegurar una búsqueda integral. Se identificaron tres bases de datos de investigación: (I) web of Science, (II) Scopus y (III) Science Direct. Solo se incluyeron estudios empíricos primarios. La revisión identificó varias situaciones en las que se introduce la metodología Biomimética y Bioinspiración para mejorar y resolver problemas tecnológicos mediante el análisis, la abstracción, la adaptación y la transposición de principios biológicos al mundo técnico. Los resultados indicaron que las estructuras basadas en frutas podrían mejorar la eficiencia de la estructura que tiene la función de proporcionar un absorbente bioinspirado eficaz para una multitud de diseños de productos. Aunque existen varios estudios, se necesita más investigación para el uso de nuevas tecnologías y nuevos escenarios para asegurar recomendaciones que puedan implementar la mejora del desarrollo de diseño bioinspirado.

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Section: Pomelo -Citrus Maximamentioning

confidence: 99%

Biomimetics as a strategy for the development of bioinspired structures for energy absorption based on fruits

Oliveira¹

2021

Cuadernos

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“…Impact-resistant structural members are components that play an important role in securing the safety of vehicles, aircraft, and other means of delivery by transforming the kinetic energy during a collision into other predictable and controllable forms of energy. The crushing performance of thin-walled crash-resistant structures of different structures [1][2][3] has been studied by a large number of scholars; among them, metallic multi-cell structural members [4][5][6][7][8] have been extensively studied for their excellent crushing and energy absorption properties. Krolak et al [9] compared the stability and ultimate loadcarrying capacity of steel single-cell and multi-cell structures by experimental methods; their results showed that the average crushing force and specific energy absorption were increased by 6 times and 0.9 times, respectively, while the cross-sectional area was reduced by 15% for multi-cell structures compared with single-cell structures.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis and theoretical studies on the axial compression behavior of multi‐cell Al‐CFRP hybrid tubes

Qin

et al. 2022

Polymer Composites

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To find a thin‐walled impact‐resistant structure with excellent crushing performance, a multi‐cell hybrid thin‐walled tube (MCHT) formed by winding carbon fibers around a multi‐cell Al tube was proposed. The structure is designed based on different structural parameters of the thin‐walled tubes exhibiting different crushing characteristics and damage modes. First, a finite element model applicable to MCHT is established, and the accuracy of the model is verified by quasi‐static axial pressure experiments. Second, the verified finite element model was used to study the variation law of the overall structural crushing performance by changing the structural parameters of MCHT, and the Al tube wall thickness was found to have the greatest effect on MCHT crushing performance, followed by the number of ribs and finally the inner circle diameter. Then, a theoretical prediction model of the mean crushing force of MCHT was established based on the principle of energy conservation, and the accuracy of the theoretical model was initially verified through experiments. Finally, to overcome the problem that the prediction error of the theoretical model is larger when the number of ribs is larger or the inner circle diameter is smaller, a correction function is constructed based on Pearson correlation coefficient analysis to further improve the generalization ability of the above‐mentioned theoretical model, and the maximum relative error is reduced from 37% to 14.61%.

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“…There is now renewed interest in these materials and the issue [15][16][17][18]. Some very interesting studies have also been conducted on the dynamic behaviour of coconut woods [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness of poplar wood veneer tubes

Guélou

Eyma

Cantarel

et al. 2021

International Journal of Impact Engineering

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This work studies the potential of using wooden tubes for crash applications. The tubes were made from 1 mm thick "I214" poplar veneers, according to different stacking sequences. Four configurations were characterized under static crushing (5 mm/min) and the one that performed best ([90/04/90]) was chosen to undergo dynamic tests under a drop weight tower (5.7 m/s). This configuration presents significant energy absorption performance in static (31.6 J / g) and in dynamic (28.5 J / g) crushing for a material that is natural, ecological (low carbon footprint), recyclable, and low cost in comparison with other materials such as composite materials. As with composites, the position, number, and orientation of the plies directly affect the amount of energy absorbed. The use of poplar, one of the weakest woods in mechanical terms, shows the possibilities of wood for this use.

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The mystery of coconut overturns the crashworthiness design of composite materials

Cited by 35 publications

References 53 publications

Biomimetics as a strategy for the development of bioinspired structures for energy absorption based on fruits

Biomimetics as a strategy for the development of bioinspired structures for energy absorption based on fruits

Numerical analysis and theoretical studies on the axial compression behavior of multi‐cell Al‐CFRP hybrid tubes

Crashworthiness of poplar wood veneer tubes

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