Finite element modelling of the instability in rapid fracture of graphene

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	Finite element modelling of the instability in rapid fracture of graphene
	Zhang B; Xiao HF; Yang G; Liu XM(刘小明)
刊名	ENGINEERING FRACTURE MECHANICS
	2015-06
通讯作者邮箱	beenchang@nuaa.edu.cn
卷号	141 页码:111-119
关键词	Dynamic fracture Graphene Crack velocity Finite element
ISSN号	0013-7944
通讯作者	Zhang, B (reprint author), Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China.
产权排序	[Zhang, Bin; Xiao, Haifeng; Yang, Gang] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China; [Zhang, Bin; Xiao, Haifeng; Yang, Gang] Nanjing Univ Aeronaut & Astronaut, Coll Aerosp Engn, Nanjing 210016, Jiangsu, Peoples R China; [Liu, Xiaoming] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
中文摘要	A finite element model of graphene strip is developed to predict the instability of dynamic fracture, in which the C-C bonds are represented by Timoshenko beam elements, and the constitutive relation of beam is derived from the atomic potential. Crack instability and branching are observed under loading strain rates from similar to 10(-5) fs(-1) to similar to 10(-8) fs(-1). Under low loading rates, the initiated midway crack propagates straight at supersonic velocity, while kinking and oscillation occur beyond a critical crack velocity similar to 10.33 km/s under high rates. The results demonstrate that our equivalent models could provide efficient information for studying the fracture in graphene. (C) 2015 Elsevier Ltd. All rights reserved.
分类号	二类/Q2
类目[WOS]	Mechanics
研究领域[WOS]	Mechanics
收录类别	SCI ; EI
原文出处	http://dx.doi.org/10.1016/j.engfracmech.2015.05.021
语种	英语
WOS记录号	WOS:000356239300007
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/54958]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Zhang B,Xiao HF,Yang G,et al. Finite element modelling of the instability in rapid fracture of graphene[J]. ENGINEERING FRACTURE MECHANICS,2015,141:111-119.
APA	Zhang B,Xiao HF,Yang G,&刘小明.(2015).Finite element modelling of the instability in rapid fracture of graphene.ENGINEERING FRACTURE MECHANICS,141,111-119.
MLA	Zhang B,et al."Finite element modelling of the instability in rapid fracture of graphene".ENGINEERING FRACTURE MECHANICS 141(2015):111-119.