In-plane crushing behaviour of hierarchical honeycombs: finite element simulation and analytical modelling

被引：11
|
作者：
Wang, Yuyang [1 ]
Zhang, Jianjun [1 ]
Lu, Guoxing [1 ]
Ha, Ngoc San [2 ]
Xiang, Xinmei [3 ]
Wang, Li [4 ]
机构：
[1] Swinburne Univ Technol, Sch Engn, Hawthorn, Vic 3122, Australia
[2] RMIT Univ, Ctr Innovat Struct & Mat, Sch Engn, Melbourne 3001, Australia
[3] Guangzhou Univ, Sch Civil Engn, Guangzhou 510006, Peoples R China
[4] Shandong Univ Weihai, Sch Mech Elect & Informat Engn, Weihai 264209, Peoples R China
来源：
ACTA MECHANICA SINICA | 2023年 / 39卷 / 11期
基金：
中国国家自然科学基金; 澳大利亚研究理事会;
关键词：
In-plane crushing; Hierarchical honeycombs; Energy absorption; Plateau stress; Analytical modelling; ENERGY-ABSORPTION; CRASHWORTHINESS; IMPACT;
D O I：
10.1007/s10409-023-23067-x
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This work reports on the in-plane crushing behaviour of second-order hierarchical honeycombs with triangle substructures (SHT). Here, cell walls of a conventional hexagonal honeycomb were replaced with two-layer equilateral triangles as substructures. Finite element (FE) simulations and analytical modelling were conducted, and a good agreement was found between FE and analytical results. The response of SHT was compared with that of other patterned honeycombs. Three deformation modes were observed under different loading speeds, and critical velocities for mode transforming were obtained qualitatively. The effect of loading speed and relative density on crushing stress and energy absorption capacity was also discussed.
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页数：11
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