Fracture problem of the thin superconducting strip with transverse crack
This paper presents the fracture behaviors in thin type-II superconducting strips with a transverse crack induced by the electromagnetic body force under a perpendicular applied field. Different from the longitudinal crack, the effect of the transverse crack on the current in the thin strip is considered. The Bean and Kim model of critical state are adopted to calculate the electromagnetic force. Based on the finite element method, the stress intensity factors of the transverse crack are obtained during one full cycle applied field (the field increasing process and decreasing process). Furthermore, the influences of the crack length on the stress intensity factors are also studied in this paper. Generally speaking, all the results are useful for understanding the critical state model and the fracture mechanism of high-temperature superconductors, which could provide a theoretical guide for the ITER CICC designer.
Thin superconducting strip Bean model Kim model Transverse crack
Cun Xue An He Huadong Yong Youhe Zhou
Department of Mechanics and Engineering Sciences,School of Civil Engineering and Mechanics,Lanzhou U Key Laboratory of Mechanics on Disaster and Environment in Western China attached to the Ministry of
国际会议
北京
英文
1-9
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）