Collective evolution characteristics and computer simulation of short fatigue cracks

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	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.
发表期刊	Philosophical Magazine A-Physics of Condensed Matter Structure Defects and Mechanical Properties
	1997
卷号	75 期号:6 页码:1517-1531
ISSN	0141-8610
摘要	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.
关键词	Weld Metal Growth Model
收录类别	SCI
语种	英语
WOS记录号	WOS:A1997XD50000002
关键词[WOS]	WELD METAL ; GROWTH ; MODEL
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/39030
专题	力学所知识产出(1956-2008)
通讯作者	Hong, YS (reprint author), CHINESE ACAD SCI,INST MECH,LAB NONLINEAR MECH CONTINUOUS MEDIA,BEIJING 100080,PEOPLES R CHINA.
推荐引用方式 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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