Bionic polycellular structures for axial compression

Li, Qiqi; Wu, Lijia; Hu, Lin; Li, Eric; Xing, Zhongyuan; Song, Kai

doi:10.1016/j.ijmecsci.2022.107428

Cited by 28 publications

(4 citation statements)

References 72 publications

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“…The results of the compressive force on the body (Li et al, 2022) of two varieties of lotus root are shown in Table 3 and Table 4, which show that the average value of the maximum destructive force of the first section of the body of the lotus root of "Baoying Beauty Red" was 84.21 N. The average value of the compressive strength was 4.29 MPa, and the range of the compressive strength was 4.04 to 4.54 MPa. The average value of the maximum destructive force of the first section of lotus root body of "E-Lian No.7" was 62.01 N. The average value of compressive strength was 3.16 MPa, and the range of compressive strength was 2.98 to 3.31 MPa.…”

Section: Compression Of Lotus Root Bodymentioning

confidence: 99%

Differences in the Physical and Mechanical Properties of Different Varieties of Lotus Root

Teng,

Zhang,

et al. 2023

Eng. Agríc.

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The traditional way of harvesting lotus root consumes a lot of labor and has low harvesting efficiency. Therefore, it is necessary to explore the automated harvesting device of lotus root. And the physical and mechanical properties of lotus root are crucial for the design of harvesting device. In this study, the mechanical properties of "Baoying Beauty Red" and "E-Lian No.7" lotus roots in different positions were tested by compression, bending and tensile methods. The results showed that the mechanical properties of "Baoying Beauty Red" were better than those of "E-Lian No.7", which were not easy to be damaged during harvesting, and the minimum compressive strength of "Baoying Beauty Red" was 4.04 MPa, the minimum bending force of lotus root breakage was 97 N, and the minimum tensile force was 182.73 N.

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Section: Compression Of Lotus Root Bodymentioning

confidence: 99%

Differences in the Physical and Mechanical Properties of Different Varieties of Lotus Root

Teng,

Zhang,

et al. 2023

Eng. Agríc.

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“…In order to adapt to the environment, organisms have evolved various unique structures, which provide many ideas for the design of metamaterials [30][31][32][33][34][35][36][37]. Inspired by bamboo and lotus root, Li et al proposed hexagonal, pentagonal, quadrilateral, and triangular multicellular structures to overcome the disadvantages of traditional thin-walled structures, such as excessive force drop after initial peak and large structural mass [38]. Aiming at the honeycomb structure with a negative Poisson's ratio, Liu and Liu proposed an improved honeycomb structure [39].…”

Section: Introductionmentioning

confidence: 99%

Low-frequency band gap design of acoustic metamaterial based on cochlear structure

Ruan,

Yu,

Hou

et al. 2024

Smart Mater. Struct.

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In this paper, a new chiral spiral structure based on the cochlear structure is proposed. The chiral spiral structure consists of four orthogonally oriented cochlear structures with the same geometric parameters connected at the inner endpoints of the four cochlear structures. Based on the Bloch’s theory and finite element method (FEM), the band gap characteristics of the proposed chiral spiral structure are studied. The effects of ligament bending angle (θ), the ratio of arc radius of cochlear contour (α), the ligament thickness (tc), and the level of the chiral spiral structure (n) on the chiral spiral structure are discussed. The results show that the two-level chiral spiral structure (n = 2) has the best band gap characteristics when θ = 180° and α = 0.45. With the decrease of tc and the increase of n, the opening frequency of the first band gap gradually decreases. When n = 22, the chiral spiral structure has the lowest opening frequency, 1.91 Hz. The existence of the band gap is verified through the low amplitude elastic wave transmission tests. The distribution of the iso-frequency lines indicates that with the increase of the level of the chiral spiral structure (n), the propagation of elastic waves of the chiral spiral structure shows more distinct directivity, which provides a basis for the propagation control of elastic waves. These findings can provide new design ideas and directions for low-frequency vibration and noise control.

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“…Besides the application of new materials, structural optimization [46][47][48][49][50][51][52][53] can further enhance the performance of thin-walled beams. Li et al [54] takes the thickness of steel hat-shaped beams as variables, and their crashworthiness was significantly improved by constructing surrogate models and applying a multi-objective algorithm.…”

Section: Introductionmentioning

confidence: 99%