Experimental and analytical studies on mechanical behavior of superconducting coil for SMES

The mechanical behavior of a superconducting coil Is important for improvin g the stability and reducing the mechanical losses of SMES. Mechanical disp lacements of a model coil for 1kWh experimental SMES (ESK) are measured and compared with analytical results using I-D FEM. Non-Linear behaviors, such as friction and sliding between conductors and spacers are considered in t his model. The preliminary stress condition caused by refrigeration is also considered. The results of this analysis show a good agreement with the ex perimentally observed ones.