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Numerical analysis of the impact resistance in aluminium alloy bi-tubular thin-walled structures designs inspired by beetle elytra

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Numerical analysis of the impact resistance in aluminium alloy bi-tubular thin-walled structures designs inspired by beetle elytra. / Xiang, Jinwu; Du, Jianxun; Li, Daochun; Scarpa, Fabrizio.

In: Journal of Materials Science, Vol. 52, No. 22, 11.2017, p. 13247–13260.

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Xiang, Jinwu ; Du, Jianxun ; Li, Daochun ; Scarpa, Fabrizio. / Numerical analysis of the impact resistance in aluminium alloy bi-tubular thin-walled structures designs inspired by beetle elytra. In: Journal of Materials Science. 2017 ; Vol. 52, No. 22. pp. 13247–13260.

Bibtex

@article{c2cdee7d4f374f6da2e750babc4f7421,
title = "Numerical analysis of the impact resistance in aluminium alloy bi-tubular thin-walled structures designs inspired by beetle elytra",
abstract = "Thin-walled tubular structures are commonly used in automotive and aerospace applications because of their high strength and lightweight characteristics. In this paper we propose a new bionic bi-tubular thin-walled structure (BBTS) inspired from the internal structure of the lady beetle elytron. Six types of BBTSs with different geometric parameters and same type of material were simulated under axial dynamic impact loading with a weight of 500 kg and a velocity of 10 m/s using nonlinear finite elements. The comparison between BBTSs with equal mass shows that the thickness of the inner wall and the cross-sectional configurations influence significantly the energy absorption of the structure. BBTSs show an optimized crashworthiness behavior when the inner wall thickness is between 1.6 mm and 2.0 mm. Circular and octagonal BBTSs also show improved absorption characteristics when the inner wall thickness is 2.0 mm. We also evaluate the energy absorption of periodically distributed BBTS against cellular configurations with irregular topology. The energy absorption characteristic of the BBTS with regular distribution is higher than the one of BBTS with irregular distribution, which indicates that the optimized regular structure has a general improved mechanical performance compared to the original bionic topology.",
author = "Jinwu Xiang and Jianxun Du and Daochun Li and Fabrizio Scarpa",
year = "2017",
month = "11",
doi = "10.1007/s10853-017-1420-z",
language = "English",
volume = "52",
pages = "13247–13260",
journal = "Journal of Materials Science",
issn = "0022-2461",
publisher = "Springer US",
number = "22",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Numerical analysis of the impact resistance in aluminium alloy bi-tubular thin-walled structures designs inspired by beetle elytra

AU - Xiang, Jinwu

AU - Du, Jianxun

AU - Li, Daochun

AU - Scarpa, Fabrizio

PY - 2017/11

Y1 - 2017/11

N2 - Thin-walled tubular structures are commonly used in automotive and aerospace applications because of their high strength and lightweight characteristics. In this paper we propose a new bionic bi-tubular thin-walled structure (BBTS) inspired from the internal structure of the lady beetle elytron. Six types of BBTSs with different geometric parameters and same type of material were simulated under axial dynamic impact loading with a weight of 500 kg and a velocity of 10 m/s using nonlinear finite elements. The comparison between BBTSs with equal mass shows that the thickness of the inner wall and the cross-sectional configurations influence significantly the energy absorption of the structure. BBTSs show an optimized crashworthiness behavior when the inner wall thickness is between 1.6 mm and 2.0 mm. Circular and octagonal BBTSs also show improved absorption characteristics when the inner wall thickness is 2.0 mm. We also evaluate the energy absorption of periodically distributed BBTS against cellular configurations with irregular topology. The energy absorption characteristic of the BBTS with regular distribution is higher than the one of BBTS with irregular distribution, which indicates that the optimized regular structure has a general improved mechanical performance compared to the original bionic topology.

AB - Thin-walled tubular structures are commonly used in automotive and aerospace applications because of their high strength and lightweight characteristics. In this paper we propose a new bionic bi-tubular thin-walled structure (BBTS) inspired from the internal structure of the lady beetle elytron. Six types of BBTSs with different geometric parameters and same type of material were simulated under axial dynamic impact loading with a weight of 500 kg and a velocity of 10 m/s using nonlinear finite elements. The comparison between BBTSs with equal mass shows that the thickness of the inner wall and the cross-sectional configurations influence significantly the energy absorption of the structure. BBTSs show an optimized crashworthiness behavior when the inner wall thickness is between 1.6 mm and 2.0 mm. Circular and octagonal BBTSs also show improved absorption characteristics when the inner wall thickness is 2.0 mm. We also evaluate the energy absorption of periodically distributed BBTS against cellular configurations with irregular topology. The energy absorption characteristic of the BBTS with regular distribution is higher than the one of BBTS with irregular distribution, which indicates that the optimized regular structure has a general improved mechanical performance compared to the original bionic topology.

U2 - 10.1007/s10853-017-1420-z

DO - 10.1007/s10853-017-1420-z

M3 - Article

VL - 52

SP - 13247

EP - 13260

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

IS - 22

ER -