Micro-crack damage in strip of fracture process zone | |
Wang LM; Li X; Xu SL; Wang HY(汪海英); Zhang ZJ | |
发表期刊 | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES |
2018-08-15 | |
卷号 | 147页码:29-39 |
ISSN | 0020-7683 |
摘要 | 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. |
关键词 | 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 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000441682700003 |
关键词[WOS] | PROPAGATION ; MICROCRACKS ; MECHANISM ; BEHAVIOR ; GROWTH ; SIZE |
WOS研究方向 | Mechanics |
WOS类目 | Mechanics |
项目资助者 | 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] |
论文分区 | 一类/力学重要期刊 |
力学所作者排名 | 4 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/77849 |
专题 | 非线性力学国家重点实验室 |
作者单位 | 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 |
推荐引用方式 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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