Knowledge Management System of Institue of Mechanics, CAS
| Collective evolution characteristics and computer simulation of short fatigue cracks | |
Hong YS(洪友士) ; Gu ZY; Fang B; Bai YL(白以龙); Hong, YS (reprint author), CHINESE ACAD SCI,INST MECH,LAB NONLINEAR MECH CONTINUOUS MEDIA,BEIJING 100080,PEOPLES R CHINA.
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| Source Publication | Philosophical Magazine A-Physics of Condensed Matter Structure Defects and Mechanical Properties
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| 1997 | |
| Volume | 75Issue:6Pages:1517-1531 |
| ISSN | 0141-8610 |
| Abstract | Fatigue testing was conducted using a kind of triangular isostress specimen to obtain the short-fatigue-crack behaviour of a weld low-carbon steel. The experimental results show that short cracks continuously initiate at slip bands within ferrite grain domains and the crack number per unit area gradually increases with increasing number of fatigue cycles. The dispersed short cracks possess an orientation preference, which is associated with the crystalline orientation of the relevant slip system. Based on the observed collective characteristics, computer modelling was carried out to simulate the evolution process of initiation, propagation and coalescence of short cracks. The simulation provides progressive displays which imitate the appearance of experimental observations. The results of simulation indicate that the crack path possesses a stable value of fractal dimension whereas the critical value of percolation covers a wide datum band, suggesting that the collective evolution process of short cracks is sensitive to the pattern of crack site distribution. |
| Keyword | Weld Metal Growth Model |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:A1997XD50000002 |
| WOS Keyword | WELD METAL ; GROWTH ; MODEL |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/39030 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Hong, YS (reprint author), CHINESE ACAD SCI,INST MECH,LAB NONLINEAR MECH CONTINUOUS MEDIA,BEIJING 100080,PEOPLES R CHINA. |
| Recommended Citation GB/T 7714 | Hong YS,Gu ZY,Fang B,et al. Collective evolution characteristics and computer simulation of short fatigue cracks[J]. Philosophical Magazine A-Physics of Condensed Matter Structure Defects and Mechanical Properties,1997,75,6,:1517-1531. |
| APA | 洪友士,Gu ZY,Fang B,白以龙,&Hong, YS .(1997).Collective evolution characteristics and computer simulation of short fatigue cracks.Philosophical Magazine A-Physics of Condensed Matter Structure Defects and Mechanical Properties,75(6),1517-1531. |
| MLA | 洪友士,et al."Collective evolution characteristics and computer simulation of short fatigue cracks".Philosophical Magazine A-Physics of Condensed Matter Structure Defects and Mechanical Properties 75.6(1997):1517-1531. |
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