Experimental and Numerical Analysis of Equivalent Elastic Properties for Bi-2212 and YBCO Conductors

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.