多芯复合超导线拉拔的有限元模拟  

FEM Simulation of Drawing Process of Multi-filamentary Wires

作　　者：徐建伟[1] 曾卫东[1] 刘江林[1] 刘建伟[2] 史一功[2] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,西安710072 [2]西部超导材料科技股份有限公司,西安710018

出　　处：《材料导报》2013年第20期153-155,160,共4页Materials Reports

基　　金：国家自然科学基金(51075333)

摘　　要：利用商业有限元软件DEFORM-3D对多芯复合超导线材的拉拔过程进行有限元模拟,研究变形过程中复合超导线各亚组元的变形情况,以及拉拔速度对超导线成形的影响。分析超导线拉拔过程中等效应力、等效应变的分布规律;并且结合韧性断裂准则来预测不同位置开裂产生的可能性。总结出拉拔速度对拉拔过程的影响规律,确定了拉拔过程中的危险区域。The cold drawing process of multi-filamentary superconductor was simulated using commercial finite element software DEFORM-3D. The deformation of each sub-element within the multi-filamentary superconductor wires and the influence of drawing speed was studied. The equivalent stress and strain distributions were analyzed du- ring drawing process of the work-piece. A simple ductile fracture criterion was employed to estimate the possible occur- rence of fracture. The influence pattern of drawing speed on drawing process was summarized and the danger zone during drawing process was determined.

关 键 词：拉拔 多芯复合超导线 有限元模拟 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]