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A Trans-scale Shear-lag Model for Characterizing the Size Effect and Viscoelasticity of Staggered Shells

文献类型：期刊论文

作者Lin, Zhongya2; Ding, Kuanjie2; Ma HS(马寒松)1; Wei, Yueguang2
刊名ACTA MECHANICA SOLIDA SINICA
出版日期2025-01-21
页码15
关键词Staggered structure Strain gradient viscoelasticity Shear-lag model Strengthening-softening effect
ISSN号0894-9166
DOI10.1007/s10338-024-00572-7
通讯作者Wei, Yueguang(weiyg@pku.edu.cn)
英文摘要Natural biomaterials with staggered structures exhibit remarkable mechanical properties owing to their unique microstructure. The microstructural arrangement can induce size-dependent and viscoelastic responses within the material. This study proposes a strain gradient viscoelastic shear-lag model to elucidate the intricate interplay between the strain gradient and viscoelastic effect in staggered shells. Our model clarifies the role of both effects, as experimentally observed, in governing the mechanical properties of these biomaterials. A detailed characterization of the size-dependent responses is conducted through the utilization of a microstructural characterization parameter alongside viscoelastic constitutive models. Then, the effective modulus of the staggered shell is defined and its formula is derived through the Laplace transform. Compared to classical models and even the strain gradient elastic model, the strain gradient viscoelastic model offers calculated moduli that are more consistent with experimental data. Moreover, the strengthening-softening effect of staggered structures is predicted using the strain gradient viscoelastic model and critical energy principle. This study contributes significantly to our understanding of the mechanical behavior of structural materials. Additionally, it provides insights for the design of advanced bionic materials with tailored properties.
分类号Q3
WOS关键词MECHANICAL-PROPERTIES ; ELASTIC-MODULUS ; HALL-PETCH ; NACRE ; INDENTATION ; NANOSCALE ; MOTHER ; PEARL
资助项目National Natural Science Foundation of China[12432003] ; National Natural Science Foundation of China[12032001] ; National Science and Technology Major Project[J2022-V-0003-0029]
WOS研究方向Materials Science ; Mechanics
语种英语
WOS记录号WOS:001401099600001
资助机构National Natural Science Foundation of China ; National Science and Technology Major Project
其他责任者Wei, Yueguang
源URL[http://dspace.imech.ac.cn/handle/311007/98213]  
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, Beijing 100871, Peoples R China;
推荐引用方式
GB/T 7714		 Lin, Zhongya,Ding, Kuanjie,Ma HS,et al. A Trans-scale Shear-lag Model for Characterizing the Size Effect and Viscoelasticity of Staggered Shells[J]. ACTA MECHANICA SOLIDA SINICA,2025:15.
APA Lin, Zhongya,Ding, Kuanjie,马寒松,&Wei, Yueguang.(2025).A Trans-scale Shear-lag Model for Characterizing the Size Effect and Viscoelasticity of Staggered Shells.ACTA MECHANICA SOLIDA SINICA,15.
MLA Lin, Zhongya,et al."A Trans-scale Shear-lag Model for Characterizing the Size Effect and Viscoelasticity of Staggered Shells".ACTA MECHANICA SOLIDA SINICA (2025):15.

入库方式： OAI收割

来源：力学研究所

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