IMECH-IR  > 非线性力学国家重点实验室
Micro-crack damage in strip of fracture process zone
Wang LM; Li X; Xu SL; Wang HY(汪海英); Zhang ZJ
Source PublicationINTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
2018-08-15
Volume147Pages:29-39
ISSN0020-7683
AbstractDamage and fracture of quasi-brittle materials are non-reversible processes of micro-defects and micro-cracks, often accompanied by a strip of micro-crack damage along the end of the macro-crack or gap. In this work, the micro-crack damage parameters in the strip are calculated, and a mechanics model is proposed to analyze the relation between deformation and force. The mechanics parameters are also determined using meso-mechanics homogenization of the damage zone of the micro-crack strip. Then, calculations of the deformation and stress in the damage strip are introduced, and the damage factor is estimated using a cohesive crack model. Finally, the relationship between the micro-crack and macro-fracture zone is correlated to electron microscopy data of a cast iron specimen and numerical results. For the damage factor, damage density, and geometrical factors of micro-cracks, the meso-mechanics scale is correlated to macro-mechanics in the damage fracture process zone by combining the homogenization method and cohesive crack model of nonlinear fracture. (C) 2018 Elsevier Ltd. All rights reserved.
KeywordQuasi-brittle materials Micro-crack Damage factor Fracture process zone Multi-scale mechanics Cohesive crack model
DOI10.1016/j.ijsolstr.2018.04.008
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000441682700003
WOS KeywordPROPAGATION ; MICROCRACKS ; MECHANISM ; BEHAVIOR ; GROWTH ; SIZE
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationState Key Laboratory of Nonlinear Mechanics in the Institute of Mechanics of Chinese Academy Sciences [2011-12-13] ; National Natural Science Foundation of China [10272068, 50438010]
Classification一类/力学重要期刊
Ranking4
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77849
Collection非线性力学国家重点实验室
Affiliation1.Qingdao Univ Technol, Sch Sci, Qingdao 266033, Shandong, Peoples R China
2.Zhejiang Univ, Coll Civil Engn & Architecture, Yuhangtang Rd 866, Hangzhou 310058, Zhejiang, Peoples R China
3.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang LM,Li X,Xu SL,et al. Micro-crack damage in strip of fracture process zone[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2018,147:29-39.
APA Wang LM,Li X,Xu SL,汪海英,&Zhang ZJ.(2018).Micro-crack damage in strip of fracture process zone.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,147,29-39.
MLA Wang LM,et al."Micro-crack damage in strip of fracture process zone".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 147(2018):29-39.
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