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The coupling effect of size and damage in micro-scale metallic materials
Ban HX; Yao Y(姚寅); Chen SH(陈少华); Fang DN; Chen, SH (reprint author), Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China.; Chen, SH (reprint author), Beijing Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 100081, Peoples R China.
Source PublicationINTERNATIONAL JOURNAL OF PLASTICITY
2017-08-01
Volume95Pages:251-263
ISSN0749-6419
AbstractIn order to characterize the deformation behavior accompanying damage of microstructures in micro-scale metallic materials a new theoretical model is developed based on a low order strain gradient plasticity theory. Not only the size effect induced by strain gradient plasticity but also the one of microstructure damage induced by deformation is considered. The feature of the new theory includes two aspects: the strain gradient is taken as an internal variable to affect the tangential hardening modulus without the introduction of high-order stress or high-order boundary condition; both the elastic modulus and the involved intrinsic length are influenced by the microstructural damage. Two commonly used samples with size effect in micro-scales i.e. the thinwire torsion and the ultra-thin beam bending are re-analyzed with the new model. It is found that stiffness of the micro-scale material is gradually reduced along with the increasing deformation and the theoretical prediction is consistent well with the existing experimental data. All the results demonstrate that the present theory should be a promising way for predicting the mechanical behavior of a more complex system for example the micro-particle reinforced metal matrix composite and the recent-hot-studied nano-crystallized gradient materials. (C) 2017 Elsevier Ltd. All rights reserved.
KeywordMicro-scale Material Strain Gradient Size Effect Damage Effect Intrinsic Length Scale
DOI10.1016/j.ijplas.2017.04.012
Indexed BySCI ; EI
Language英语
WOS IDWOS:000403438800011
WOS KeywordSTRAIN GRADIENT PLASTICITY ; DISCRETE DISLOCATION DYNAMICS ; CONTENT B4C/AL COMPOSITES ; CRYSTAL PLASTICITY ; GRAIN-SIZE ; MATRIX COMPOSITES ; LENGTH SCALE ; DEPENDENT DEFORMATION ; MECHANICAL-PROPERTIES ; DUCTILE FRACTURE
WOS Research AreaEngineering ; Materials Science ; Mechanics
WOS SubjectEngineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
Funding OrganizationNSFC(11372317 ; BIT Creative Research Plan ; 11532013 ; 11402270)
Classification一类
Ranking1
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60522
Collection非线性力学国家重点实验室
Corresponding AuthorChen, SH (reprint author), Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China.; Chen, SH (reprint author), Beijing Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 100081, Peoples R China.
Recommended Citation
GB/T 7714
Ban HX,Yao Y,Chen SH,et al. The coupling effect of size and damage in micro-scale metallic materials[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2017,95:251-263.
APA Ban HX,姚寅,陈少华,Fang DN,Chen, SH ,&Chen, SH .(2017).The coupling effect of size and damage in micro-scale metallic materials.INTERNATIONAL JOURNAL OF PLASTICITY,95,251-263.
MLA Ban HX,et al."The coupling effect of size and damage in micro-scale metallic materials".INTERNATIONAL JOURNAL OF PLASTICITY 95(2017):251-263.
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