Non-linear finite element analysis of the SSC superconductivity magnet. Including the effects of cool down, operation, quench, pre-assembly loads, and Lorentz Forces.

摘要

A two-dimensional plane strain model of the SSC magnet (cold mass) was developed to determine the stresses and deflections under a variety of conditions. Cool down from room temperature to 4.35 K and the effects of quench in the coils were calculated using the computer code TACO -- a finite element heat transfer code. Pre-assembly loads, energization to 6.6 tesla, pressure due to liquid helium, Lorentz Forces on the copper plated beam tube, were incorporated in NIKE2D -- 2-D vectorized implicit finite element code. The model for material behavior was treated as thermo-elastic plastic which required material properties as a function of temperature. The programs were run remotely on the Cray computers in Livermore via the Vax computers at Berkeley.