Bionic design of thin-walled tubes inspired by the vascular structure of bamboo

Liu, Yansong; Qi, Yingchun; Sun, Hao; Han, Na; Zhou, Jianfei; Song, Jiafeng; Zou, Meng

doi:10.1016/j.tws.2023.110689

Cited by 24 publications

(8 citation statements)

References 64 publications

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“…The material used here is the AA6061T4 and the material failure of aluminum alloy tube is not considered [30,31]. Mechanical properties: mass density ρ is 2,700 kg/m 3 , Young's modulus E is 70.0 GPa, initial yield stress σ y is 114.34 MPa, the ultimate stress σ u is 257.83 MPa, and the Poisson's ratio μ is 0.31 [32]. The stress-strain curve tested is shown in Figure 5.…”

Section: Evaluation Indexmentioning

confidence: 99%

On Design of Through-Hole Structure Inspired by Vascular Bundle of Bamboo for Multiple Compression Load Cases

Liu,

Chen

et al. 2023

Applied Bionics and Biomechanics

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In this paper, the multiangle’s crashworthiness of the bionic tubes inspired by the cylindrical fibers of bamboo vascular bundles as well as the through-hole structure are studied. A finite element model validated by the theoretical analysis and drop hammer impact experiments is used to assess the optimal core distribution ratio of the bionic tube at 0°, 10°, 20°, and 30° impacts. Finally the effects of the number of circular core and wall thickness on crashworthiness are investigated. The results show that the bionic tube has better crashworthiness at small angle impacts compared to the square tubes, and l14r6 is obtained as the optimum bionic tube: the SEA at small angles improves by 12.72% (0°), 14.91% (10°), and 18.12% (20°), respectively; however, the SEA at 30° impact decreases by 2.53%. As the number of circular core increases, the crashworthiness becomes more significant, but the deformation mode becomes worse. The SEA of the tube with 32 cores increases by an average of 1.85 times (0°), 1.89 times (10°), 1.34 times (20°), and 1.41 times (30°) for each impact condition, respectively, compared to the tube with single core.

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Section: Evaluation Indexmentioning

confidence: 99%

On Design of Through-Hole Structure Inspired by Vascular Bundle of Bamboo for Multiple Compression Load Cases

Liu,

Chen

et al. 2023

Applied Bionics and Biomechanics

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“…To achieve energy absorption and dissipation under load, thin-walled tubes are subjected to a plastic deformation by progressive or symmetric pleating [3,4]. In recent years, there has been a significant amount of research conducted on materials used for thin-walled tubes, crosssectional shapes and defect guidance, among other related topics [5][6][7][8]. The objective was to decrease the initial peak forces, enhance specific energy absorption and attain consistent and controlled deformation modes [9].…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness Study of Functional Gradient Lattice-Reinforced Thin-Walled Tubes under Impact Loading

Liu,

Wang,

Liang

et al. 2024

Materials

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Creating lightweight and impact-resistant box structures has been an enduring pursuit among researchers. A new energy-absorbing structure consisting of a bionic gradient lattice-enhanced thin-walled tube is presented in this article. The gradient lattice and thin-walled tube were prepared using selective laser melting (SLM) and wire-cutting techniques, respectively. To analyze the effects of gradient pattern, mass ratio, diameter range and impact speed on structural crashworthiness, low-speed impact at 4 m/s and finite element simulation experiments were conducted. The study demonstrates that the design of inward radial gradient lattice-reinforced thin-walled tubes can effectively enhance structure’s energy-absorption efficiency and provide a more stable mode of deformation. It also shows a 17.44% specific energy-absorption advantage over the uniformly lattice-reinforced thin-walled tubes, with no significant overall gain in peak crushing force. A complex scale evaluation method was used to determine the optimum structure and the structure type with the best crashworthiness was found to be a gradient lattice-filled tube with a thickness of 0.9 mm and a slope index of 10. The gradient lattice-reinforced thin-walled tube suggested in this investigation offers guidance for designing a more efficient thin-walled energy-absorption structure.

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“…Liang et al introduced bionic bamboo tubes with enhanced energy absorption potential, particularly in large-angle cases [26]. Lastly, Liu et al proposed a novel bionic tube design inspired by bamboo vascular bundles, achieving optimal energy absorption through specific structural characteristics [27].…”

Section: Introductionmentioning

confidence: 99%

Multiscale Characterization and Biomimetic Design of Porcupine Quills for Enhanced Mechanical Performance

Liu,

Wang,

Zhao

et al. 2024

Materials

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The mechanical properties of porcupine quills have attracted the interest of researchers due to their unique structure and composition. However, there is still a knowledge gap in understanding how these properties can be utilized to design biomimetic structures with enhanced performance. This study delves into the nanomechanical and macro-mechanical properties of porcupine quills, unveiling varied elastic moduli across different regions and cross sections. The results indicated that the elastic moduli of the upper and lower epidermis were higher at 8.13 ± 0.05 GPa and 7.71 ± 0.14 GPa, respectively, compared to other regions. In contrast, the elastic modulus of the mid-dermis of the quill mid-section was measured to be 7.16 ± 0.10 GPa. Based on the micro- and macro-structural analysis of porcupine quills, which revealed distinct variations in elastic moduli across different regions and cross sections, various biomimetic porous structures (BPSs) were designed. These BPSs were inspired by the unique properties of the quills and aimed to replicate and enhance their mechanical characteristics in engineering applications. Compression, torsion, and impact tests illustrated the efficacy of structures with filled hexagons and circles in improving performance. This study showed enhancements in maximum torsional load and crashworthiness with an increase in filled structures. Particularly noteworthy was the biomimetic porous circular structure 3 (BPCS_3), which displayed exceptional achievements in average energy absorption (28.37 J) and specific energy absorption (919.82 J/kg). Finally, a response surface-based optimization method is proposed to enhance the design of the structure under combined compression-torsion loads, with the goal of reducing mass and deformation. This research contributes to the field of biomimetics by exploring the potential applications of porcupine quill-inspired structures in fields such as robotics, drive shafts, and aerospace engineering.

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Bionic design of thin-walled tubes inspired by the vascular structure of bamboo

Cited by 24 publications

References 64 publications

On Design of Through-Hole Structure Inspired by Vascular Bundle of Bamboo for Multiple Compression Load Cases

On Design of Through-Hole Structure Inspired by Vascular Bundle of Bamboo for Multiple Compression Load Cases

Crashworthiness Study of Functional Gradient Lattice-Reinforced Thin-Walled Tubes under Impact Loading

Multiscale Characterization and Biomimetic Design of Porcupine Quills for Enhanced Mechanical Performance

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