Knowledge Management System of Institue of Mechanics, CAS
| Dislocation nucleation and emission from crack-tip | |
Wang ZQ(王自强) ; WANG, TC (reprint author), CHINESE ACAD SCI,INST MECH,BEIJING 100080,PEOPLES R CHINA.
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| 发表期刊 | International Journal of Fracture
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| 1995 | |
| 卷号 | 69期号:4页码:295-306 |
| ISSN | 0376-9429 |
| 摘要 | The problems of dislocation nucleation and emission from a crack tip are analysed based on Peierls model. The concept adopted here is essentially the same as that proposed by Rice. A slight modification is introduced here to identify the pure linear elastic response of material. A set of new governing equations is developed, which is different from that used by Beltz and Rice. The stress field and the dislocation density field can be expressed as the first and second Chebyshev polynomial series respectively. Then the opening and slip displacements can be expanded as the trigonometric series. The Newton-Raphson Method is used to solve a set of nonlinear algebraic equations. The new governing equations allow us to extend the analyses to the case of dislocation emission. The calculation results for pure shearing, pure tension and combined tension and shear loading are given in detail. |
| 关键词 | Lattice |
| DOI | 10.1007/BF00037380 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:A1995RA95100002 |
| 关键词[WOS] | LATTICE |
| WOS研究方向 | Materials Science ; Mechanics |
| WOS类目 | Materials Science, Multidisciplinary ; Mechanics |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/39240 |
| 专题 | 力学所知识产出(1956-2008) |
| 通讯作者 | WANG, TC (reprint author), CHINESE ACAD SCI,INST MECH,BEIJING 100080,PEOPLES R CHINA. |
| 推荐引用方式 GB/T 7714 | Wang ZQ,WANG, TC . Dislocation nucleation and emission from crack-tip[J]. International Journal of Fracture,1995,69,4,:295-306. |
| APA | 王自强,&WANG, TC .(1995).Dislocation nucleation and emission from crack-tip.International Journal of Fracture,69(4),295-306. |
| MLA | 王自强,et al."Dislocation nucleation and emission from crack-tip".International Journal of Fracture 69.4(1995):295-306. |
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