Couple effect of surface energy and strain gradient on the mechanical behaviors of the biological staggered composites
文献类型：期刊论文
| 作者 | Liu, Yanwei; Ma HS(马寒松) ; Long, Hao; Wei, Yueguang
|
| 刊名 | COMPOSITE STRUCTURES
 |
| 出版日期 | 2021-09 |
| 卷号 | 271页码:114133 |
| 关键词 | Biological staggered composites Strain gradient Surface energy Trans-scale shear-lag model Size effect |
| ISSN号 | 0263-8223 |
| DOI | 10.1016/j.compstruct.2021.114133 |
| 英文摘要 | Biological staggered composites, which are hierarchy spanning from nano scale to macro scale, boast remarkable mechanical properties. In this paper, a trans-scale shear-lag model is established based on the strain gradient theory and the Gurtin-Murdoch model, which provides a chance to glimpse how the micro-nano structures of the biological composite determine its macroscopic mechanical behavior. With the trans-scale shear-lag model, we found that the deformation, stress distribution and overall effective modulus have strong size effects, which are related to the thickness of the 'matrix' and 'platelet' of the biological staggered composites. Based on the analysis, two normalized numbers d/l and Es/(hEp) are proposed to describe the size effects caused by the thickness of the matrix and platelet, respectively. Besides, the predicted effective moduli of the biological staggered structure composites are compared with the experiments to verify our trans-scale shear-lag model. Our research sheds light on the understanding of the mechanical behaviors of the staggered biological composites and provides theoretical guidance for the design of high-performance bionic composite materials. |
| 学科主题 | Mechanics ; Materials Science, Composites |
| 分类号 | 一类 |
| 语种 | 英语 |
| WOS记录号 | WOS:000663802500005 |
| 资助机构 | National Natural Science Foundation of China [11890681, 11672301, 11572329, 11521202, 11432014] |
| 其他责任者 | Wei, YG (corresponding author), Peking Univ, Coll Engn, Dept Mech & Engn Sci, BIC ESAT, Beijing 100871, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/90248]  |
| 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, Coll Engn, Dept Mech & Engn Sci, BIC ESAT, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yanwei,Ma HS,Long, Hao,et al. Couple effect of surface energy and strain gradient on the mechanical behaviors of the biological staggered composites[J]. COMPOSITE STRUCTURES,2021,271:114133. |
| APA | Liu, Yanwei,马寒松,Long, Hao,&Wei, Yueguang.(2021).Couple effect of surface energy and strain gradient on the mechanical behaviors of the biological staggered composites.COMPOSITE STRUCTURES,271,114133. |
| MLA | Liu, Yanwei,et al."Couple effect of surface energy and strain gradient on the mechanical behaviors of the biological staggered composites".COMPOSITE STRUCTURES 271(2021):114133. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。