Extraction on the Contact Forces Among the Opaque and Non-photoelastic Particles Under Electromagnetic Force

作     者：Shuaike Jiao Cong Liu Jun Zhou Xingyi Zhang You-He Zhou 

作者机构：Key Laboratory of Mechanics on Disaster and Environment in Western China Attached to the Ministry of Education of ChinaLanzhou UniversityLanzhou 730000China Department of Mechanics and Engineering SciencesCollege of Civil Engineering and MechanicsLanzhou UniversityLanzhou 730000China 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：2022年第35卷第2期

页      面：248-260页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

基　　金：This work is supported by the fund of Natural Science Foundation of China(Nos.11872196 11902130) 

主　　题：Contact force Electromagnetic force Superconducting strand Cross section 

摘      要：Contact force is related to the mechanical response of superconducting strands under a large electromagnetic body force,which is important for the safety of the international t hermonuclear experimen tai reac tor(ITER)magne t struc *** to the complex st rue ture of the cable-in-conduit conductor(CICC),the component unit of the ITER magnet,and the extreme operating environment,the research on the strand contact force caused by the electromagnetic force has been progressing *** this study,a two-dimensional(2D)theoretical model based on the granular elemen t method is construe ted to compute the contac t forces among some opaque and non-photoelastic ferromagnetic particles which are placed in a non-uniform magnetic *** the experiment,the contact deformations of these particles may be obtained by the digital image correlation *** also propose a method,which is similar to the least-squares method,to calculate the electromagnetic body forces of different ***,the distributional and statistical characteristics of the contac t force chains and contact angles are presen *** is considered that the method proposed in this paper is suitable for the contact force analysis of the cross section of superconducting strands in the ITER CICC that is subjected to a transverse elec-tromagnetic *** the end,this 2D theoretical model is generalized to the three-dimensional(3D)case,and the concise mathematical framework is presented.