Two-step homogenization for the effective thermal conductivities of twisted multi-filamentary superconducting strand
Two-step homogenization for the effective thermal conductivities of twisted multi-filamentary superconducting strand作者机构:Department of Mechanics and Engineering SciencesCollege of Civil Engineering and MechanicsLanzhou UniversityLanzhou 730000China Key Laboratory of Mechanics on Disaster and Environment in Western ChinaMinistry of Education of ChinaLanzhou UniversityLanzhou 730000China
出 版 物:《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学(英文版))
年 卷 期:2022年第43卷第5期
页 面:689-708页
核心收录:
学科分类:08[工学] 0701[理学-数学] 0801[工学-力学(可授工学、理学学位)] 080102[工学-固体力学]
基 金:Project supported by the National Natural Science Foundation of China(Nos.12172155 and11872195) the Project of Innovation Star for Outstanding Graduates Students of Gansu Provincial Department of Education of China(No.2021CXZX-031)
主 题:superconducting strand multi-filamentary two-step homogenization effective thermal conductivity
摘 要:For the accurate prediction of the effective thermal conductivities of the twisted multi-filamentary superconducting strand,a two-step homogenization method is *** on the distribution of filaments,the superconducting strand can be decomposed into a set of concentric cylinder *** layer is a two-phase composite composed of the twisted filaments and copper *** the first step of homogenization,the representative volume element(RVE)based finite element(FE)homogenization method with the periodic boundary condition(PBC)is adopted to evaluate the effective thermal conductivities of each *** the second step of homogenization,the generalized self-consistent method is used to obtain the effective thermal conductivities of all the concentric cylinder *** accuracy of the developed model is validated by comparing with the local and full-field FE ***,the effects of the twist pitch on the effective thermal conductivities of twisted multi-filamentary superconducting strand are studied.