Universal shielding effect of curvature on two interacting cracks

doi:10.1016/j.jmps.2023.105389

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Universal shielding effect of curvature on two interacting cracks
	Liu, Mengqi ; Zhen, Yu ; Sun, Yi ; He, Linghui ; Wu, Kaijin ; Ni Y(倪勇)
刊名	JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
	2023-10-01
卷号	179 页码:105389
关键词	Curvature Fracture Crack propagation paths The interaction of multiple cracks Shielding effect
ISSN号	0022-5096
DOI	10.1016/j.jmps.2023.105389
英文摘要	The interaction of approaching cracks plays a crucial role in the formation of complex crack patterns in the mechanics and physics of materials defects. While curvature has been shown to be important in the growth, interaction, and ordering of various defects, its influence on the interactions of multiple cracks remains poorly understood. In this study, we investigate how two approaching cracks interact in curved sheets using an integrated mechanical framework combing experiments, fracture phase-field simulations, and theoretical analysis. Our findings demonstrate that the repulsive and attractive interactions between the two initially parallel cracks are significantly shielded by curvature. This shielding effect arises because curvature alters the stress fields at the crack tips and reduces the initial deflection angle of the crack tips. We observe this effect under different initial crack positions, material properties, and curved configurations, indicating a general role of curvature in controlling the paths and interactions of cracks. This study provides insights into understanding the interaction of approaching cracks, which has implications for fracture and fatigue control.
分类号	一类/力学重要期刊
WOS研究方向	Materials Science ; Mechanics ; Physics
语种	英语
WOS记录号	WOS:001050174600001
资助机构	National Natural Science Foundation of China [12025206, 12202433] ; National Postdoctoral Program for Innovative Talents [BX2021284] ; Nature Science Foundation of Anhui Province [2208085QA25] ; USTC Research Funds of the Double First-Class Initiative [YD2090002010] ; China Postdoctoral Science Foundation [2022M723042]
其他责任者	Wu, KJ ; Ni, Y (corresponding author), Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230026, Anhui, Peoples R China. ; Ni, Y (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 Beisihuan West Rd, Beijing 100190, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92560]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.{Liu, Mengqi, Zhen, Yu, Sun, Yi, He, Linghui, Wu, Kaijin, Ni, Yong} Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230026, Anhui, Peoples R China 2.{Ni, Yong} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 Beisihuan West Rd, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Liu, Mengqi,Zhen, Yu,Sun, Yi,et al. Universal shielding effect of curvature on two interacting cracks[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2023,179:105389.
APA	Liu, Mengqi,Zhen, Yu,Sun, Yi,He, Linghui,Wu, Kaijin,&倪勇.(2023).Universal shielding effect of curvature on two interacting cracks.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,179,105389.
MLA	Liu, Mengqi,et al."Universal shielding effect of curvature on two interacting cracks".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 179(2023):105389.