Engineering Analyses of NCSX Modular Coil and Its Supporting Structure for EM Loads

Fan, H.M. ; Williamson, D.

Princeton University. Plasma Physics Laboratory.

关键词: Copper;    Stress Analysis Finite Element Method;    Magnetic Fields;    70 Plasma Physics And Fusion Technology;    Stellarators;   

DOI  :  10.2172/820121
RP-ID  :  PPPL-3897
RP-ID  :  AC02-76CH03073
RP-ID  :  820121

美国|英语

来源: UNT Digital Library

【 摘 要 】

NCSX modular coil is a major parts of the NCSX coil systems that surround the highly shaped plasma and vacuum vessel. The flexible copper cable conductors are used to form modular coil on both sides of the ''tee'' beam, which is cast inside the supporting shell structure. The Engineering analyses comprise sequentially coupled-field analyses that include an electromagnetic analysis to calculate the magnetic fields and EM forces, and a structural analysis to evaluate the structural responses. In the sequential EM-structural analysis, nodal forces obtained from the EM analysis were applied as ''nodal force'' loads in the subsequent stress analysis using the identical nodal points and elements. The shell model was imported directly from Pro/ENGINEER files in order to obtain an accurate structural representation. The Boolean operations provided by the ANSYS preprocessor were then applied to subdivide the solid model for more desirable finite element meshing. Material properties of the modular coil were based on test results. Analyses using the ANSYS program to evaluate structural responses of the complicated modular coil systems provided a clear understanding of the structural behaviors and the directions for improving the structural design.