| A size-dependent model for predicting the mechanical behaviors of adhesively bonded layered structures based on strain gradient elasticity | |
Long, Hao1; Ma HS(马寒松)2 ; Wei, Yueguang1; Liu, Yanwei1
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| Corresponding Author | Wei, Yueguang(weiyg@pku.edu.cn) |
| Source Publication | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
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| 2021-05-15 | |
| Volume | 198Pages:15 |
| ISSN | 0020-7403 |
| Abstract | 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. |
| Keyword | Size effect Adhesive layer Interface Strain gradient Layered structure |
| DOI | 10.1016/j.ijmecsci.2021.106348 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000654044000001 |
| WOS Keyword | PIEZOELECTRIC ACTUATORS ; INTERFACIAL STRESSES ; THICKNESS ; BEAMS ; FRACTURE ; PLASTICITY ; SENSORS ; PLATE ; COST ; MEMS |
| WOS Research Area | Engineering ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Mechanics |
| Funding Project | National Natural Science Foundation of China[11890681] ; National Natural Science Foundation of China[12032001] ; National Natural Science Foundation of China[11521202] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 一类 |
| Ranking | 2 |
| Contributor | Wei, Yueguang |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/86787 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Peking Univ, BIC ESAT, Coll Engn, Dept Mech & Engn Sci, Beijing 100871, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2021F238.pdf（3199KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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