3-D STRESS-ANALYSIS OF THE TPX TOROIDAL FIELD-COIL SUPPORT STRUCTURE

A 3-D, coupled, electromagnetic and stress analysis of the Tokamak Phy sics eXperiment (TPX) toroidal field (TF) coil support structure is pr esented, The analysis makes use of one-eighth toroidal symmetry to sim ulate the magnetic field and structural characteristics of the superco nducting TF and poloidal field (PF) coil systems. Notable extensions t o past work include the addition of the PP coil set and the coupled el ectromagnetic and structural solution technique, In this analysis, the PP coils are included in the magnetic field calculations and attached to the TF coil structure to simulate the appropriate structural inter action, The effects of attaching the PP ring coils directly to the TF coil cases, with no provisions for free radial relative motion, are ev aluated and discussed. The effects of various PP coil operation points are also discussed, Stress results are compared to the TPX structural design criteria to evaluate the general adequacy of the overall desig n.