A bio-inspired foam-filled multi-cell structural configuration for energy absorption

Yao, Ruyang; Pang, Toh Yen; He, Song; Li, Qing; Zhang, Bei; Sun, Guangyong

doi:10.1016/j.compositesb.2022.109801

Cited by 76 publications

(10 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The maximum deviation rate of MCF is −32.87%, but the deviation value is only 3.28 kN. By referring to the abundant works in the literature [ 8 , 26 , 33 , 34 ], we concluded that, for numerical deviations with small bases, a force within 4 kN is acceptable. In general, the predicted ICF values for the axial crushing of single-cell tubes are relatively close to the values simulated by the finite-element analysis, and the error deviation is relatively small but shows a growing trend with increasing thickness.…”

Section: Discussionmentioning

confidence: 76%

Axial Crushing Theory and Optimization of Lattice-Filled Multicellular Square Tubes

Zhou,

Liu,

Rong

et al. 2024

Materials

View full text Add to dashboard Cite

A lattice-filled multicellular square tube features a regular cross-sectional shape, good energy consumption, and good crashworthiness, which is suitable for the design of energy absorbers in various protection fields such as automobiles, aerospace, bridges, etc. Based on the super folding theory, two reference planes are set to refine the energy consumption zone of the super folding element in this study. The energy consumption calculation of convex panel stretching is involved, and the critical crushing force formula is introduced in this study. Meanwhile, the calculation method from a single-cell square tube to a multicellular thin-walled square tube is extended and the structural optimization is investigated, in which the NSGAII algorithm is used to obtain the Pareto front (PF) of the crashworthiness performance index of the square multicellular tubes, the Normal Boundary Intersection (NBI) method is adopted to select knee points, and the influence of different cross-sectional widths on the number, as well as the thickness, of cells are discussed. This study’s results indicate that the theoretical value is consistent with that obtained from the numerical simulation, meaning that the improved theoretical model can be applied to predict the crashworthiness of multicellular square cross-sectional tubes. Also, the optimization method and study results proposed in this study can provide a reference for the design of square lattice multicellular tubes.

show abstract

Section: Discussionmentioning

confidence: 76%

Axial Crushing Theory and Optimization of Lattice-Filled Multicellular Square Tubes

Zhou,

Liu,

Rong

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

“…The concept of gradient design is a widely employed strategy in the design of honeycombs [ 12 ], and it has been proven through theoretical [ 13 ], numerical [ 14 ], and experimental [ 15 ] studies that the mechanical performance of honeycombs can be significantly affected by gradient design. Based on a non-uniform design method mapped by density-based topology optimization, Zou et al [ 16 ] designed a novel non-uniform honeycomb.…”

Section: Introductionmentioning

confidence: 99%

In-Plane Elastic Properties of 3D-Printed Graded Hierarchical Hexagonal Honeycombs

Tao,

Zhao,

Shi

et al. 2024

Polymers

View full text Add to dashboard Cite

In this study, the graded hierarchical hexagonal honeycomb (GHHH) integrating gradient design and hierarchical design was fabricated using the 3D-printing technique, and its in-plane elastic properties were investigated theoretically, experimentally, and numerically. Theoretical solutions were developed based on the Euler beam theory to predict the effective elastic modulus and Poisson’s ratio of GHHH, and theoretical values were in good agreement with the experimental and numerical results. The effect of gradient design and hierarchical design on the in-plane elastic properties of GHHH was also analyzed and compared. Results showed that the hierarchical design has a more significant effect on Poisson’s ratio and adjusting the internal forces of GHHH compared with the gradient design. In addition, it was found that GHHH exhibited higher stiffness compared with regular hexagonal honeycomb (RHH), graded hexagonal honeycomb (GHH), and vertex-based hierarchical hexagonal honeycomb (VHHH) under the constraint of the same relative density, respectively. Specifically, the effective elastic modulus of GHHH can be enhanced by 119.82% compared to that of RHH. This research will help to reveal the effect of integrating hierarchical design and gradient design on the in-plane elastic properties of honeycombs.

show abstract

“…The results show that the advantages of high EA are more prominent when the wall thicknesses of the upper and lower sections differ significantly. Yao et al 31 proposed a bioinspired multicell tube (BIMCT) that imitates the structure of animal long bones. The BIMCT, which consists of a multicell structure with varying thickness in the lateral direction and a foamy aluminum with gradually increasing density in the axial direction, was analyzed according to quasi‐static crushing tests and numerical analyses.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical crashworthiness investigation of 3D printing carbon fiber reinforced nylon origami tubes

Jiang,

Zhao,

Chen

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

In this article, the crashworthiness performance of 3D printed origami tubes with variable thickness and different printing angles are investigated. First, experimental results showed that, compared with the traditional equal thickness origami tubes, the initial peak crushing force of variable thickness origami tubes (VTOT) was reduced by 41% and the specific energy absorption (SEA) had an improvement of 22%. Then, the energy absorption (EA) capacity of 3D printed origami tubes at different printing angles was measured and analyzed experimentally. It can be concluded that smaller print angles provide better EA, and the larger print angles result in a significant increase in layer‐to‐layer shear under quasi‐static axial loads, which makes the component more susceptible to buckling and cracking. Finally, the finite element method was constructed through Abaqus/Explicit to study the crashworthiness of VTOT under different mean thickness and the thickness difference in detail. As the mean thickness increases, the load‐carrying capacity and EA capacity increase during the crushing process, but the VTOT with a mean thickness of 1.2 mm has the highest SEA and CLE. The larger thickness differences can significantly improve the EA properties of the VTOT through the changing of the deformation mode.Highlights Both experimental and numerical methods were used to study origami tubes with varying thicknesses. Origami tubes printed at 0° have a higher energy absorption capacity. Variable thickness origami tubes improve the crashworthiness of traditional origami tubes.

show abstract

A bio-inspired foam-filled multi-cell structural configuration for energy absorption

Cited by 76 publications

References 73 publications

Axial Crushing Theory and Optimization of Lattice-Filled Multicellular Square Tubes

Axial Crushing Theory and Optimization of Lattice-Filled Multicellular Square Tubes

In-Plane Elastic Properties of 3D-Printed Graded Hierarchical Hexagonal Honeycombs

Experimental and numerical crashworthiness investigation of 3D printing carbon fiber reinforced nylon origami tubes

Contact Info

Product

Resources

About