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Mechanical behavior and size effect of the staggered bio-structure materials
Ma HS(马寒松); Wei YG(魏悦广); Song JR(宋晶如); Liang LH(梁立红); Reprint Author: Ma HS and Wei YG
Source PublicationMECHANICS OF MATERIALS
2018-11
Volume126Pages:47-56
ISSN0167-6636
Abstract

Staggered structure materials, or "brick and mortar" structure materials, are widely observed in natural biomaterials. In this paper, based on strain gradient theory, a trans-scale shear-lag model is developed to characterize the mechanical properties and their size effects for the staggered bio-structurematerials. The analytical expressions of the overall effective modulus, interfacial strengths and deformations of the staggered bio-structure material have been obtained. The results illustrate that the overall effective modulus, interfacial strengths and interfacial deformations have the strong size effects. These effects can be described by a combination parameter, i.e. thickness of organic material layer over the material length scale parameter of strain gradient theory. The overall effective modulus and interfacial strength increase with the decrease of the combination parameter. However, the interfacial deformation considerably decreases with the decrease of the combination parameter value. When the combination parameter value is taken as very large, corresponding to the case of large organic matrix thickness, the results return to the classical ones. The predicted effective moduli of nacre are also compared with experimental results and are in good agreement with experimental results.

KeywordStaggered Bio-structure Trans-scale Model Strain Gradient Theory Effective Modulus Shear-lag Model
DOI10.1016/j.mechmat.2018.07.009
Indexed BySCI ; EI
Language英语
WOS IDWOS:000447580200005
Classification二类/q1
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77964
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Ma HS,Wei YG,Song JR,et al. Mechanical behavior and size effect of the staggered bio-structure materials[J]. MECHANICS OF MATERIALS,2018,126:47-56.
APA Ma HS,Wei YG,Song JR,Liang LH,&Reprint Author: Ma HS and Wei YG.(2018).Mechanical behavior and size effect of the staggered bio-structure materials.MECHANICS OF MATERIALS,126,47-56.
MLA Ma HS,et al."Mechanical behavior and size effect of the staggered bio-structure materials".MECHANICS OF MATERIALS 126(2018):47-56.
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