中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 力学研究所
  3. 中国科学院力学研究所
  4. 非线性力学国家重点实验室
Micro-crack damage in strip of fracture process zone

文献类型：期刊论文

作者Wang LM; Li X; Xu SL; Wang HY(汪海英); Zhang ZJ
刊名INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
出版日期2018-08-15
卷号147页码:29-39
关键词Quasi-brittle materials Micro-crack Damage factor Fracture process zone Multi-scale mechanics Cohesive crack model
ISSN号0020-7683
DOI10.1016/j.ijsolstr.2018.04.008
英文摘要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.
分类号一类/力学重要期刊
URL标识查看原文
WOS关键词PROPAGATION ; MICROCRACKS ; MECHANISM ; BEHAVIOR ; GROWTH ; SIZE
WOS研究方向Mechanics
语种英语
WOS记录号WOS:000441682700003
资助机构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]
源URL[http://dspace.imech.ac.cn/handle/311007/77849]  
专题力学研究所_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.

入库方式： OAI收割

来源：力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。