Crack problem in a functionally graded superconductor cylinder under pulsed field magnetization

doi:10.1016/j.physc.2022.1354050

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	Crack problem in a functionally graded superconductor cylinder under pulsed field magnetization
	Zhao, Yufeng; Li, Tengjiao
刊名	Physica C: Superconductivity and its Applications
	2022-05-15
卷号	596
关键词	Cracks Heat transfer Magnetic fields Magnetization Stress intensity factors Superconducting materials Crack problems Electromagnetic stress FEM models Functionally graded Functionally graded superconductor Gradient parameter Model-based OPC Pulsed magnetic fields Pulsed-field magnetization Stress-intensity factors
ISSN号	0921-4534
DOI	10.1016/j.physc.2022.1354050
英文摘要	In the paper, the fracture of functionally graded superconductor under pulsed magnetic field is numerically analyzed, and the effect of electromagnetic stress and thermal stress on crack problem under pulsed magnetic field is studied. A FEM model based on H formula and heat transfer equation is proposed for the electromagnetic thermal behavior of inhomogeneous superconductors with central cracks. The influence of the gradient parameter η of critical current density on the stress intensity factor was investigated. The numerical results show that the gradient parameter η has a great influence on the change of stress intensity factor caused by electromagnetic force and thermal strain with time, which makes the crack easy to expand. In addition, the results show that the electromagnetic stress decreases gradually with the increase of crack length, and the thermal stress has a significant effect on the stress intensity factor. © 2022 Elsevier B.V.
WOS研究方向	Physics
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000791343400003
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158010]
专题	理学院
作者单位	School of Science, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhao, Yufeng,Li, Tengjiao. Crack problem in a functionally graded superconductor cylinder under pulsed field magnetization[J]. Physica C: Superconductivity and its Applications,2022,596.
APA	Zhao, Yufeng,&Li, Tengjiao.(2022).Crack problem in a functionally graded superconductor cylinder under pulsed field magnetization.Physica C: Superconductivity and its Applications,596.
MLA	Zhao, Yufeng,et al."Crack problem in a functionally graded superconductor cylinder under pulsed field magnetization".Physica C: Superconductivity and its Applications 596(2022).