Experimental and Numerical Analysis of Equivalent Elastic Properties for Bi-2212 and YBCO Conductors
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For mechanical design and optimization of high field HTS magnet, predicting elastic properties of Bi-2212 and YBCO conductors was of great importance. Experimental, numerical, and analytical methods could be used to predict the elastic properties of Bi-2212 and YBCO conductors. Due to the limitation of experiment, the elastic properties along a length direction of Bi-2212 and YBCO conductors were obtained by a tensile test. In this work, the numerical homogenization based on a finite element method was used for predicting the other elastic constants of Bi-2212 and YBCO conductors, and the analytical homogenization was adopted for the further validation of the numerical results. Compared with the measured data, the prediction of numerical homogenized approach was feasible. The analytical and numerical results were basically in accordance with experimental data, demonstrating the feasibility of numerical approach to predict the elastic properties of Bi-2212 conductors as well as the two-step analytical method to predict the elastic properties of YBCO conductor.
KeywordsBi-2212 BCO Equivalent elastic properties Numerical homogenization Analytical homogenization
This work was supported by the National Magnetic Confinement Fusion Science Program (Grant Nos. 2011GB112001 and 2013GB110001), the Program of International S&T Cooperation (Grant No. 2013DFA51050), the National Nature Science Foundation of China (Grant Nos. 51271155, 51377138, and 51302231), and the Fundamental Research Funds for the Central Universities (SWJTU2682016ZDPY10).