兰州大学机构库 >土木工程与力学学院
Spring model for mechanical-electrical properties of CICC in cryogenic-electromagnetic environments
Li, Yingxu; Yang, Ting; Zhou, Youhe; Gao, Yuanwen
2014-07
Source PublicationCRYOGENICS   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN0011-2275
Volume62Pages:14-30
AbstractTests on short samples and subsize conductors have been extensively conducted to demonstrate the undesired degradation of Nb3Sn CICC. The spring rod is taken as a more accurate description for strand helix, compared to rectilinear beam in most of previous models. The proposed model simulates mechanical behaviors of the homogenized strand over cable range under operating loads. Improved hydrostatic pressure model is employed for initial transverse load transmission and a second-order reaction force is considered for further continuous contact. The average integral formulation is used to calculate transport electric field and critical current degradation. The spring model gives a distribution of the strand deformation in one characteristic length and the strain regime in whole cable cross-section. The simulated transport voltage-current curve at cable level is compared to the experimental one and found a good agreement. The proposed model also evaluates the effects of void fraction, n value and characteristic length. A certain extent of performance promotion for CICC independent with AC loss and cycling loading is suggested to increase the subsequent twist pitch length and reduce the void fraction in a reasonable range. It is also found that increasing the twist angle with respect to the cable axis properly is helpful for reducing the degradation. (C) 2014 Elsevier Ltd. All rights reserved.
KeywordSpring model Cryogenic-electromagnetic environments CICC degradation ITER
Subject AreaThermodynamics ; Physics
PublisherELSEVIER
DOI10.1016/j.cryogenics.2014.03.020
Publication PlaceOXFORD
Indexed BySCIE ; EI
Language英语
First Inst
Funding Project国家自然科学基金项目 ; 国家磁约束核聚变能发展研究专项
Project NumberNational Key Project of Magneto-Constrained Fusion Energy Development Program [2013GB110002] ; National Natural Science Foundation of China [11372120, 11032006, 11121202]
WOS IDWOS:000341470600004
Funding OrganizationNSFC ; MOST
SubtypeArticle
EI ID20141917690998
Department[Gao, Yuanwen] Minist Educ China, Key Lab Mech Environm & Disaster Western China, Lanzhou 730000, Gansu, Peoples R China;
Lanzhou Univ, Coll Civil Engn & Mech, Dept Mech & Engn Sci, Lanzhou 730000, Gansu, Peoples R China
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/121245
Collection土木工程与力学学院
Corresponding AuthorGao, Yuanwen
Affiliation
1.Minist Educ China, Key Lab Mech Environm & Disaster Western China, Lanzhou 730000, Gansu, Peoples R China
2.Lanzhou Univ, Coll Civil Engn & Mech, Dept Mech & Engn Sci, Lanzhou 730000, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Li, Yingxu,Yang, Ting,Zhou, Youhe,et al. Spring model for mechanical-electrical properties of CICC in cryogenic-electromagnetic environments[J]. CRYOGENICS,2014,62:14-30.
APA Li, Yingxu,Yang, Ting,Zhou, Youhe,&Gao, Yuanwen.(2014).Spring model for mechanical-electrical properties of CICC in cryogenic-electromagnetic environments.CRYOGENICS,62,14-30.
MLA Li, Yingxu,et al."Spring model for mechanical-electrical properties of CICC in cryogenic-electromagnetic environments".CRYOGENICS 62(2014):14-30.
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