Modeling and Experimental Validation of Superconductor Tape Rolling
Modeling and Experimental Validation of Superconductor Tape Rolling
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DOI：
10.1115/1.1371929
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发表时间：
2001-11
影响因子：
4
通讯作者：
M. Pandheeradi;S. Vaze;D. Yuan;H. Kuhn
中科院分区：
文献类型：
--
作者：
M. Pandheeradi;S. Vaze;D. Yuan;H. Kuhn
高效，无缺陷的高温超导（HTS）导线和胶带的制造对于各种国防和电力应用至关重要。为了改进这些制造操作，对将高温超导钢丝转化为磁带的多道次轧制工艺的早期阶段进行了分析和实验研究。采用Drucker-Prager Cap塑性模型代表粉末芯，采用Von-Mises各向同性硬化塑性模型代表银鞘的三维有限元模型模拟轧制过程。并与实验结果进行了比较。结果表明，该方法可以准确地预测胶带的横截面几何形状和粉芯尺寸。此外，即使摩擦剪切应力分布明显不同，交替边界条件对所考虑的减小范围内的预测截面几何形状的影响也很小。
Efficient, defect-free manufacturing of high-temperature superconducting (HTS) wires and tapes is critical to a variety of defense and electrical power applications. To contribute to the improvement of these manufacturing operations, an analytical and experimental study of the early stages of the multipass rolling process for transforming HTS wires into tapes was conducted. The rolling process was simulated by a three-dimensional (3D) finite element model that uses the Drucker-Prager Cap plasticity model to represent the powder core and a Von-Mises plasticity model with isotropic hardening to represent the silver sheath. The predicted cross-sectional geometry of the tapes is compared with experiments. The results show that the tape cross-sectional geometry and powder core sizes can be predicted accurately. Further, alternate boundary conditions were found to have minimal effect on the predicted cross-sectional geometry for the range of reductions considered, even though the frictional shear stress distributions were significantly different.