| Micro-crack damage in strip of fracture process zone | |
Wang LM; Li X ; Xu SL; Wang HY(汪海英); Zhang ZJ
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| Source Publication | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
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| 2018-08-15 | |
| Volume | 147Pages:29-39 |
| ISSN | 0020-7683 |
| Abstract | Damage 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. |
| Keyword | Quasi-brittle materials Micro-crack Damage factor Fracture process zone Multi-scale mechanics Cohesive crack model |
| DOI | 10.1016/j.ijsolstr.2018.04.008 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000441682700003 |
| WOS Keyword | PROPAGATION ; MICROCRACKS ; MECHANISM ; BEHAVIOR ; GROWTH ; SIZE |
| WOS Research Area | Mechanics |
| WOS Subject | Mechanics |
| Funding Organization | State 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 |
| Ranking | 4 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/77849 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.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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| IrJ2018235.pdf（3084KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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