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

doi:10.1007/s10338-024-00572-7

IMECH-IR > 非线性力学国家重点实验室

	A Trans-scale Shear-lag Model for Characterizing the Size Effect and Viscoelasticity of Staggered Shells
	Lin, Zhongya 1; Ding, Kuanjie 1; Ma HS(马寒松)2 ; Wei, Yueguang1
通讯作者	Wei, Yueguang([email protected])
发表期刊	ACTA MECHANICA SOLIDA SINICA
	2025-01-21
页码	15
ISSN	0894-9166
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.
关键词	Staggered structure Strain gradient viscoelasticity Shear-lag model Strengthening-softening effect
DOI	10.1007/s10338-024-00572-7
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:001401099600001
关键词[WOS]	MECHANICAL-PROPERTIES ; ELASTIC-MODULUS ; HALL-PETCH ; NACRE ; INDENTATION ; NANOSCALE ; MOTHER ; PEARL
WOS研究方向	Materials Science ; Mechanics
WOS类目	Materials Science, Multidisciplinary ; Mechanics
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]
项目资助者	National Natural Science Foundation of China ; National Science and Technology Major Project
论文分区	Q3
力学所作者排名	3+
RpAuthor	Wei, Yueguang
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/98214
专题	非线性力学国家重点实验室
作者单位	1.Peking Univ, 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
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.Rp_Au:Wei, Yueguang
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.