Bi系高温超导单芯线材拉拔工艺的数值模拟  

Numerical Simulation of Drawing Process for Bi Superconducting Single-filament Tape

作　　者：蔡芳[1] 雷丽萍[1] 赵迎红[1] 曾攀[1] 

机构地区：[1]清华大学先进成形制造教育部重点实验室,北京100084

出　　处：《中国机械工程》2006年第19期2010-2013,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50305015)

摘　　要：对高温超导单芯线材的拉拔工艺开展了研究,建立了单芯高温超导线材拉拔工艺的轴对称数值模型,计算分析了拉拔半模角、截面缩减率以及摩擦因数等工艺参数对拉拔工艺的影响。针对拉拔过程中径向体积应变、拉拔力、摩擦损耗能以及残余应力等多指标的优化问题,采用了线性加权和法获得了Bi系高温超导单芯线材拉拔过程中的最优拉拔半模角。The drawing process of a high temperature superconducting single-filament tape was studied. With axisymmetrical model of the drawing processing of the superconductor filament established, the influences of the processing parameters such as the angle of the drawing die, cross-sectional reduction ratio and friction coefficient on the drawing process were analyzed. According to the rnulti-objective optimization problem related with radial volumetric strain, drawing force, friction dissipation energy and residual stresses, linear weighted method was implemented to determine the optimized drawing angle.

关 键 词：高温超导 拉拔 有限元 工艺参数 

分 类 号：TG356.6[金属学及工艺—金属压力加工]