Study on impact resistance of bionic interlocking brick-mud structures

doi:10.1016/j.compstruct.2023.117103

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Study on impact resistance of bionic interlocking brick-mud structures
	Liu B(刘斌); Xu XH(许向红)
刊名	COMPOSITE STRUCTURES
	2023-08-15
卷号	318 页码:117103
关键词	Interlocking structure Gradient design Brick -mud structure Impact resistance
ISSN号	0263-8223
DOI	10.1016/j.compstruct.2023.117103
英文摘要	The exquisite meso- or micro-structures of natural biomaterials, e.g., brick-mud microstructures of nacre and conch shell, gradient micro-structures of bamboo and antlers, and interlocking meso-structures of beetle shells, can enhance the ability of materials to resist external impact from different aspects. This will provide inspiration for the design, optimization and performance improvement of new bionic impact resistance structures. In this paper, gradient and interlocking structures are introduced into brick-mud structures, and then gradient interlocking and bidirectional interlocking brick-mud structures are designed, and finally samples are prepared by 3D printing technology. The results of pendulum impact experiment show that the larger the cell size gradient, the higher the energy absorption of the gradient interlocking brick-mud structure, and that the smaller the number of elliptical units in the interlocking area in the cell, the higher the energy absorption of the bidirectional interlocking brick-mud structure. The amounts of energy absorbed by the two proposed interlocking brick-mud structures during impact can be up to 6.2 times and 2.5 times that by the uniform nacre brick-mud structure, respectively. The mechanism of the energy absorption improvement of the interlocking structure is studied by using the finite element method. The gradient interlocking design can significantly improve the stress distribution and deformation coordination in the impact area, and increase the stress level and bending deformation in the sample before failure. Moreover, the bidirectional interlocking design can increase the number and deflection of cracks in the fracture area, and further extend the crack propagation path, thus improving energy dissipation.
分类号	一类
WOS研究方向	Mechanics ; Materials Science, Composites
语种	英语
WOS记录号	WOS:001004988900001
资助机构	National Natural Science Foundation of China [11672297] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22020200]
其他责任者	Xu, XH (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92403]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.{Liu Bin} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 2.{Liu Bin, Xu Xianghong} Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Liu B,Xu XH. Study on impact resistance of bionic interlocking brick-mud structures[J]. COMPOSITE STRUCTURES,2023,318:117103.
APA	刘斌,&许向红.(2023).Study on impact resistance of bionic interlocking brick-mud structures.COMPOSITE STRUCTURES,318,117103.
MLA	刘斌,et al."Study on impact resistance of bionic interlocking brick-mud structures".COMPOSITE STRUCTURES 318(2023):117103.