In High Temperature Superconducting (HTS) power cable, HTS tapes are wound helically around a circular former and are subjected to different types of mechanical loads during manufacturing, transportation and installation of cable. The strain developed within the HTS tape during these processes may affect the superconducting properties of the tape. In the present work, 3D structural finite element (FE) models using ANSYS® are developed to obtain the strain behaviour of the tape under different loading conditions, considering the layered sandwich composite structure of 2G HTS tapes. The analysis is carried out with axial tensile and twisting loads on the tape, during helical winding of tape around the former and a combined effect of helical winding with external tensile and bending loads. The result obtained from FE simulation due to applied tensile load is compared with the established experimental result, which shows a good agreement. Further, the strain developed within the tape affects the critical current. Therefore, the strain is coupled with an empirical relation to obtain the critical current degradation of the tape. The FE analysis is carried out for five different winding pitches and four different bending radii with YBCO layer in the downward position and the corresponding critical currents are estimated. Further, a minimum winding pitch is obtained, below which the rapid degradation of critical current is initiated. The results show that the HTS tape with YBCO in downward position can withstand more amount of external load without affecting the critical axial strain of the tape.

在高温超导（HTS）电力电缆中，HTS胶带螺旋缠绕在圆形线圈架上，并在电缆的制造，运输和安装过程中承受不同类型的机械载荷。在这些过程中，HTS胶带内产生的应变可能会影响胶带的超导性能。在当前工作中，考虑到2G HTS胶带的层状夹心复合结构，开发了使用ANSYS®的3D结构有限元（FE）模型来获得胶带在不同载荷条件下的应变行为。该分析是在将磁带以螺旋形缠绕成型机的过程中，通过在磁带上施加轴向拉伸和扭转载荷以及螺旋缠绕与外部拉伸和弯曲载荷共同作用下进行的。将有限元模拟由于施加拉伸载荷而获得的结果与已建立的实验结果进行了比较，这显示出很好的一致性。此外，带内产生的应变影响临界电流。因此，应变与经验关系耦合以获得带的临界电流劣化。对五个不同的绕组螺距和四个不同的弯曲半径（YBCO层位于下方）进行了有限元分析，并估算了相应的临界电流。此外，获得最小的绕组节距，在该最小节距以下，开始临界电流的快速降级。结果表明，YBCO朝下的HTS胶带可以承受更多的外部载荷，而不会影响胶带的临界轴向应变。