Interface crack problems with strain gradient effects
文献类型：期刊论文
| 作者 | Chen SH(陈少华) ; Wang ZQ(王自强)
|
| 刊名 | International Journal of Fracture
 |
| 出版日期 | 2002 |
| 卷号 | 117期号:1页码:25-37 |
| ISSN号 | 0376-9429 |
| 通讯作者 | Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China. |
| 英文摘要 | In this paper, the strain gradient theory proposed by Chen and Wang (2001 a, 2002b) is used to analyze an interface crack tip field at micron scales. Numerical results show that at a distance much larger than the dislocation spacing the classical continuum plasticity is applicable; but the stress level with the strain gradient effect is significantly higher than that in classical plasticity immediately ahead of the crack tip. The singularity of stresses in the strain gradient theory is higher than that in HRR field and it slightly exceeds or equals to the square root singularity and has no relation with the material hardening exponents. Several kinds of interface crack fields are calculated and compared. The interface crack tip field between an elastic-plastic material and a rigid substrate is different from that between two elastic-plastic solids. This study provides explanations for the crack growth in materials by decohesion at the atomic scale. |
| 学科主题 | 力学 |
| 类目[WOS] | Materials Science, Multidisciplinary ; Mechanics |
| 研究领域[WOS] | Materials Science ; Mechanics |
| 关键词[WOS] | TIP FIELDS ; MODE-I ; INDENTATION EXPERIMENTS ; NONLOCAL THEORY ; PLASTICITY ; FRACTURE ; SOLIDS ; CONTINUUM ; HARDNESS ; GROWTH |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000179613800002 |
| 公开日期 | 2007-06-15 ; 2007-12-05 ; 2009-06-23 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/17012]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Chen SH,Wang ZQ. Interface crack problems with strain gradient effects[J]. International Journal of Fracture,2002,117(1):25-37. |
| APA | 陈少华,&王自强.(2002).Interface crack problems with strain gradient effects.International Journal of Fracture,117(1),25-37. |
| MLA | 陈少华,et al."Interface crack problems with strain gradient effects".International Journal of Fracture 117.1(2002):25-37. |
入库方式： OAI收割
来源：力学研究所
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