Crack problem in superconducting cylinder with exponential distribution of critical-current density

doi:10.1016/j.physc.2018.01.006

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	Crack problem in superconducting cylinder with exponential distribution of critical-current density
	Zhao, Yufeng 1,2; Xu, Chi 2; Shi, Liang 2
刊名	PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
	2018-04-15
卷号	547 页码:30-35
关键词	Exponential distribution of critical-current density Crack problem Stress intensity factor Magnetization process
ISSN号	0921-4534
DOI	10.1016/j.physc.2018.01.006
英文摘要	The general problem of a center crack in a long cylindrical superconductor with inhomogeneous critical-current distribution is studied based on the extended Bean model for zero-field cooling (ZFC) and field cooling (FC) magnetization processes, in which the inhomogeneous parameter eta is introduced for characterizing the critical-current density distribution in inhomogeneous superconductor. The effect of the inhomogeneous parameter eta on both the magnetic field distribution and the variations of the normalized stress intensity factors is also obtained based on the plane strain approach and J-integral theory. The numerical results indicate that the exponential distribution of critical-current density will lead a larger trapped field inside the inhomogeneous superconductor and cause the center of the cylinder to fracture more easily. In addition, it is worth pointing out that the nonlinear field distribution is unique to the Bean model by comparing the curve shapes of the magnetization loop with homogeneous and inhomogeneous critical-current distribution. (c) 2018 Elsevier B.V. All rights reserved.
资助项目	Natural Science Foundation of China[11662009] ; Natural Science Foundation of Gansu Province[17JR5RA129]
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000427566300006
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32695]
专题	理学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Zhao, Yufeng
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yufeng,Xu, Chi,Shi, Liang. Crack problem in superconducting cylinder with exponential distribution of critical-current density[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,2018,547:30-35.
APA	Zhao, Yufeng,Xu, Chi,&Shi, Liang.(2018).Crack problem in superconducting cylinder with exponential distribution of critical-current density.PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,547,30-35.
MLA	Zhao, Yufeng,et al."Crack problem in superconducting cylinder with exponential distribution of critical-current density".PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 547(2018):30-35.