Knowledge Management System of Institue of Mechanics, CAS
| Interface crack problems with strain gradient effects | |
Chen SH(陈少华) ; Wang ZQ(王自强); Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
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| Source Publication | International Journal of Fracture
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| 2002 | |
| Volume | 117Issue:1Pages:25-37 |
| ISSN | 0376-9429 |
| Abstract | 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. |
| Subject Area | 力学 |
| DOI | 10.1023/A:1020904510702 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000179613800002 |
| WOS Keyword | TIP FIELDS ; MODE-I ; INDENTATION EXPERIMENTS ; NONLOCAL THEORY ; PLASTICITY ; FRACTURE ; SOLIDS ; CONTINUUM ; HARDNESS ; GROWTH |
| WOS Research Area | Materials Science ; Mechanics |
| WOS Subject | Materials Science, Multidisciplinary ; Mechanics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/17012 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Chen SH,Wang ZQ,Chen, SH . Interface crack problems with strain gradient effects[J]. International Journal of Fracture,2002,117,1,:25-37. |
| APA | 陈少华,王自强,&Chen, SH .(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. |
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