A size-dependent model for predicting the mechanical behaviors of adhesively bonded layered structures based on strain gradient elasticity

doi:10.1016/j.ijmecsci.2021.106348

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

	A size-dependent model for predicting the mechanical behaviors of adhesively bonded layered structures based on strain gradient elasticity
	Long, Hao 2; Ma HS(马寒松)1; Wei, Yueguang 2; Liu, Yanwei 2
刊名	INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
	2021-05-15
卷号	198 页码:15
关键词	Size effect Adhesive layer Interface Strain gradient Layered structure
ISSN号	0020-7403
DOI	10.1016/j.ijmecsci.2021.106348
通讯作者	Wei, Yueguang(weiyg@pku.edu.cn)
英文摘要	As adhesively bonded layered devices scale down, micro-scale adhesive layers become common and play a key role in the overall performance of micro devices. Herein, we use the strain gradient elasticity to characterize the micro-scale adhesive layers and propose an analytical size-dependent model to predict the mechanical behaviors of adhesively bonded layered structures. The results indicate that the local interfacial tractions and the global adherend displacement both show strong size effects, especially for soft adhesives with low modulus. When the ratio of the adhesive layer thickness to its material characteristic length scale (on the order of microns), representing the scale of the layered structures, decreases to unity, the interfacial tractions increase substantially and the adherend displacement decreases significantly. Meanwhile, the adherend displacement is insensitive to the adhesive modulus. The present study reveals the stiffening behaviors of layered structures, which are attributed to the large strain gradients in the constrained micro-scale adhesive layers. The results can help us predict the deformation of adhesively bonded layered structures, and achieve high performance of micro devices by adhesive bonding.
分类号	一类
资助项目	National Natural Science Foundation of China[11890681] ; National Natural Science Foundation of China[12032001] ; National Natural Science Foundation of China[11521202]
WOS关键词	PIEZOELECTRIC ACTUATORS ; INTERFACIAL STRESSES ; THICKNESS ; BEAMS ; FRACTURE ; PLASTICITY ; SENSORS ; PLATE ; COST ; MEMS
WOS研究方向	Engineering ; Mechanics
语种	英语
WOS记录号	WOS:000654044000001
资助机构	National Natural Science Foundation of China
其他责任者	Wei, Yueguang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86786]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Peking Univ, BIC ESAT, Coll Engn, Dept Mech & Engn Sci, Beijing 100871, Peoples R China;
推荐引用方式 GB/T 7714	Long, Hao,Ma HS,Wei, Yueguang,et al. A size-dependent model for predicting the mechanical behaviors of adhesively bonded layered structures based on strain gradient elasticity[J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,2021,198:15.
APA	Long, Hao,马寒松,Wei, Yueguang,&Liu, Yanwei.(2021).A size-dependent model for predicting the mechanical behaviors of adhesively bonded layered structures based on strain gradient elasticity.INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,198,15.
MLA	Long, Hao,et al."A size-dependent model for predicting the mechanical behaviors of adhesively bonded layered structures based on strain gradient elasticity".INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 198(2021):15.