Collapse characteristics of multi-cell square tube structure under oblique load

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (21) : 95-100.

LI Zhichao1, KANG Yingzi1, ZHEN Ran2, LI Ruilong2, SHANGGUAN Wenbin1

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Abstract

The finite element model for calculating energy absorption characteristics of multi-cell square tube structure was established, and axial collapse tests of double-cell tubes were used to verify the correctness of the established model.The developed model was used to study collapse characteristics of multi-cell square tube structure under oblique load.Results showed that multi-cell square tube structure can have the global buckling deformation under oblique loads with angles of 20°and 30° to cause significant drop of its energy absorption capacity.Thus, a layered multi-cell square tube structure was proposed.It was shown that the layered multi-cell square tube structure has a larger energy absorption capacity and crushing force efficiency under oblique loading; under oblique loads with large angles, it can avoid the global buckling deformation.Using the complex proportion assessment method, oblique comprehensive impact performances of traditional square tubes, multi-cell ones and layered multi-cell ones were evaluated to determine the layered multi-cell square tube L5 having the optimal oblique impact performance.

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energy absorption / multi-cell square tube / oblique load / finite element analysis

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LI Zhichao1, KANG Yingzi1, ZHEN Ran2, LI Ruilong2, SHANGGUAN Wenbin1. Collapse characteristics of multi-cell square tube structure under oblique load[J]. Journal of Vibration and Shock, 2020, 39(21): 95-100

References

[1] 张秧聪, 许平, 彭勇,等. 高速列车前端多胞吸能结构的耐撞性优化[J]. 振动与冲击, 2017, 36(12):31-36.
ZHANG Yangcong, XU Ping, PENG Yong, et al. Crashworthiness optimization of high-speed train front multi-cell energy-absorbing structures[J]. Journal of Vibration and Shock, 2017, 36(12):31-36.
[2] Tran T N, Baroutaji A. Crashworthiness optimal design of multi-cell triangular tubes under axial and oblique impact loading[J]. Engineering Failure Analysis, 2018, 93: 241-256.
[3] Chen S, Yu H, Fang J. A novel multi-cell tubal structure with circular corners for crashworthiness[J]. Thin-Walled Structures, 2018, 122: 329-343.
[4] Li W, Luo Y, Li M, et al. A more weight-efficient hierarchical hexagonal multi-cell tubular absorber[J]. International Journal of Mechanical Sciences, 2018, 140: 241-249.
[5] Fang J, Gao Y, Sun G, et al. On design of multi-cell tubes under axial and oblique impact loads[J]. Thin-Walled Structures, 2015, 95: 115-126.
[6] Zou X, Gao G, Dong H, et al. Crashworthiness analysis and structural optimisation of multi-cell square tubes under axial and oblique loads[J]. International Journal of Crashworthiness, 2017, 22(2):129-147.
[7] Qiu N, Gao Y, Fang J, et al. Crashworthiness analysis and design of multi-cell hexagonal columns under multiple loading cases[J]. Finite Elements in Analysis & Design, 2015, 104:89-101.
[8] Azimi M B, Asgari M, Salaripoor H. A new homo-polygonal multi-cell structures under axial and oblique impacts; considering the effect of cell growth in crashworthiness[J]. International Journal of Crashworthiness, 2019: 1-18.
[9] Pirmohammad S, Nikkhah H. Crashworthiness investigation of bitubal columns reinforced with several inside ribs under axial and oblique impact loads[J]. Proc IMechE Part D: Journal of automobile engineering, 2018, 232(3): 367-383.
[10] Hanssen A G, Langseth M, Hopperstad O S. Static and dynamic crushing of square aluminium extrusions with aluminium foam filler[J]. International Journal of Impact Engineering, 2000, 24(4): 347-383.
[11] Ying L, Dai M, Zhang S, et al. Multiobjective crashworthiness optimization of thin-walled structures with functionally graded strength under oblique impact loading[J]. Thin-Walled Structures, 2017, 117: 165-177.
[12] Zhang X, Zhang H. Energy absorption of multi-cell stub columns under axial compression[J]. Thin-Walled Structures, 2013, 68:156-163.