Structural analysis (Siemens) of the euratom coil for the large coil taks

The structural analysis of coil and casing of large superconducting magnets is essential to ensure the safety in the design and has guiding importance for the concept of even larger magnet units in future projects. For the Large Coil Task calculations are performed by the finite element computer code NASTRAN in order to obtain the stresses on the various structural parts under thermal and magnetic loads. The mechanical behaviour of the coil and casing under normal as well as alternative load conditions is discussed. Plots demonstrate the state of deformation belonging to the single structure parts. The most relevant results for the components of normal and shear stresses in the coil as well as for the equivalent stresses in the casing are summarized in tables. The finite element model used is presented. The assumptions relating to the material properties, the force transmitted between coil and casing, the loading conditions, and the boundary conditions are discussed.